/*
* Copyright 2000, International Business Machines Corporation and others.
* All Rights Reserved.
- *
+ *
* This software has been released under the terms of the IBM Public
* License. For details, see the LICENSE file in the top-level source
* directory or online at http://www.openafs.org/dl/license10.html
#include <afsconfig.h>
#include <afs/param.h>
-RCSID("$Header$");
+#include <roken.h>
+
#ifdef AFS_NAMEI_ENV
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <dirent.h>
-#include <afs/assert.h>
-#include <string.h>
-#include <sys/file.h>
-#include <sys/param.h>
-#include <lock.h>
-#ifdef AFS_AIX_ENV
-#include <sys/lockf.h>
+
+#ifdef HAVE_SYS_FILE_H
+# include <sys/file.h>
#endif
-#ifdef AFS_SUN5_ENV
-#include <unistd.h>
+
+#ifdef AFS_NT40_ENV
+#define DELETE_ZLC
+#include <windows.h>
+#include <winnt.h>
+#include <winbase.h>
+#include <direct.h>
#endif
+
+#include <lock.h>
#include <afs/afsutil.h>
#include <lwp.h>
#include "nfs.h"
#include "viceinode.h"
#include "voldefs.h"
#include "partition.h"
+#include "fssync.h"
+#include "volume_inline.h"
+#include "common.h"
+#include <afs/errors.h>
+
+#ifdef AFS_NT40_ENV
+#include <afs/errmap_nt.h>
+#endif
+
+#ifndef LOCK_SH
+#define LOCK_SH 1 /* shared lock */
+#define LOCK_EX 2 /* exclusive lock */
+#define LOCK_NB 4 /* don't block when locking */
+#define LOCK_UN 8 /* unlock */
+#endif
+
+#ifdef AFS_SALSRV_ENV
+#include <pthread.h>
+#include <afs/work_queue.h>
+#include <afs/thread_pool.h>
+#include <vol/vol-salvage.h>
+#endif
+
+int Testing=0;
-extern char *volutil_PartitionName_r(int volid, char *buf, int buflen);
-int namei_iread(IHandle_t *h, int offset, char *buf, int size)
+afs_sfsize_t
+namei_iread(IHandle_t * h, afs_foff_t offset, char *buf, afs_fsize_t size)
{
- int nBytes;
+ afs_sfsize_t nBytes;
FdHandle_t *fdP;
fdP = IH_OPEN(h);
if (fdP == NULL)
return -1;
- if (FDH_SEEK(fdP, offset, SEEK_SET)<0) {
+ nBytes = FDH_PREAD(fdP, buf, size, offset);
+ if (nBytes < 0)
FDH_REALLYCLOSE(fdP);
- return -1;
- }
-
- nBytes = FDH_READ(fdP, buf, size);
- FDH_CLOSE(fdP);
+ else
+ FDH_CLOSE(fdP);
return nBytes;
}
-int namei_iwrite(IHandle_t *h, int offset, char *buf, int size)
+afs_sfsize_t
+namei_iwrite(IHandle_t * h, afs_foff_t offset, char *buf, afs_fsize_t size)
{
- int nBytes;
+ afs_sfsize_t nBytes;
FdHandle_t *fdP;
fdP = IH_OPEN(h);
if (fdP == NULL)
return -1;
- if (FDH_SEEK(fdP, offset, SEEK_SET)<0) {
+ nBytes = FDH_PWRITE(fdP, buf, size, offset);
+ if (nBytes < 0)
FDH_REALLYCLOSE(fdP);
- return -1;
- }
- nBytes = FDH_WRITE(fdP, buf, size);
- FDH_CLOSE(fdP);
+ else
+ FDH_CLOSE(fdP);
return nBytes;
}
-
-
+#ifdef AFS_NT40_ENV
+/* Inode number format:
+ * low 32 bits - if a regular file or directory, the vnode; else the type.
+ * 32-36 - uniquifier tag and index into counts array for this vnode. Only
+ * two of the available bits are currently used. The rest are
+ * present in case we ever increase the number of types of volumes
+ * in the volume group.
+ * bit 37 : 1 == special, 0 == regular
+ */
+# define NAMEI_VNODEMASK 0x00ffffffff
+# define NAMEI_TAGSHIFT 32
+# define NAMEI_INODESPECIAL 0x2000000000
+# define NAMEI_SPECDIR "R"
+# define NAMEI_SPECDIRC 'R'
+#else /* !AFS_NT40_ENV */
/* Inode number format:
* low 26 bits - vnode number - all 1's if volume special file.
- * next 3 bits - tag
+ * next 3 bits - tag
* next 3 bits spare (0's)
* high 32 bits - uniquifier (regular) or type if spare
*/
-#define NAMEI_VNODEMASK 0x003ffffff
-#define NAMEI_TAGMASK 0x7
-#define NAMEI_TAGSHIFT 26
-#define NAMEI_UNIQMASK 0xffffffff
-#define NAMEI_UNIQSHIFT 32
-#define NAMEI_INODESPECIAL ((Inode)NAMEI_VNODEMASK)
-#define NAMEI_VNODESPECIAL NAMEI_VNODEMASK
-
+# define NAMEI_VNODEMASK 0x003ffffff
+# define NAMEI_TAGSHIFT 26
+# define NAMEI_UNIQMASK 0xffffffff
+# define NAMEI_UNIQSHIFT 32
+# define NAMEI_INODESPECIAL ((Inode)NAMEI_VNODEMASK)
/* dir1 is the high 8 bits of the 26 bit vnode */
-#define VNO_DIR1(vno) ((vno >> 14) & 0xff)
+# define VNO_DIR1(vno) ((vno >> 14) & 0xff)
/* dir2 is the next 9 bits */
-#define VNO_DIR2(vno) ((vno >> 9) & 0x1ff)
+# define VNO_DIR2(vno) ((vno >> 9) & 0x1ff)
/* "name" is the low 9 bits of the vnode, the 3 bit tag and the uniq */
+# define NAMEI_SPECDIR "special"
+#endif /* !AFS_NT40_ENV */
+#define NAMEI_TAGMASK 0x7
+#define NAMEI_VNODESPECIAL NAMEI_VNODEMASK
-#define NAMEI_SPECDIR "special"
#define NAMEI_SPECDIRLEN (sizeof(NAMEI_SPECDIR)-1)
-#define NAMEI_MAXVOLS 5 /* Maximum supported number of volumes per volume
- * group, not counting temporary (move) volumes.
- * This is the number of separate files, all having
- * the same vnode number, which can occur in a volume
- * group at once.
- */
+#define NAMEI_MAXVOLS 5 /* Maximum supported number of volumes per volume
+ * group, not counting temporary (move) volumes.
+ * This is the number of separate files, all having
+ * the same vnode number, which can occur in a volume
+ * group at once.
+ */
-
+#ifndef AFS_NT40_ENV
typedef struct {
int ogm_owner;
int ogm_group;
int ogm_mode;
} namei_ogm_t;
+#endif
-int namei_SetLinkCount(FdHandle_t *h, Inode ino, int count, int locked);
-static int GetFreeTag(IHandle_t *ih, int vno);
+static int GetFreeTag(IHandle_t * ih, int vno);
/* namei_HandleToInodeDir
*
* Format: /<vicepx>/INODEDIR
*
*/
+#ifdef AFS_NT40_ENV
+static void
+namei_HandleToInodeDir(namei_t * name, IHandle_t * ih)
+{
+ memset(name, '\0', sizeof(*name));
+ nt_DevToDrive(name->n_drive, ih->ih_dev);
+ strlcpy(name->n_path, name->n_drive, sizeof(name->n_path));
+}
+
+#else
+/* Format: /<vicepx>/INODEDIR */
#define PNAME_BLEN 64
-static void namei_HandleToInodeDir(namei_t *name, IHandle_t *ih)
+static void
+namei_HandleToInodeDir(namei_t * name, IHandle_t * ih)
{
- char *tmp = name->n_base;
+ size_t offset;
memset(name, '\0', sizeof(*name));
- (void) volutil_PartitionName_r(ih->ih_dev, tmp, NAMEI_LCOMP_LEN);
- tmp += VICE_PREFIX_SIZE;
- tmp += ih->ih_dev > 25 ? 2 : 1;
- *tmp = '/'; tmp ++;
- (void) strcpy(tmp, INODEDIR);
- (void) strcpy(name->n_path, name->n_base);
+ /*
+ * Add the /vicepXX string to the start of name->n_base and then calculate
+ * offset as the number of bytes we know we added.
+ *
+ * FIXME: This embeds knowledge of the vice partition naming scheme and
+ * mapping from device numbers. There needs to be an API that tells us
+ * this offset.
+ */
+ volutil_PartitionName_r(ih->ih_dev, name->n_base, sizeof(name->n_base));
+ offset = VICE_PREFIX_SIZE + (ih->ih_dev > 25 ? 2 : 1);
+ name->n_base[offset] = OS_DIRSEPC;
+ offset++;
+ strlcpy(name->n_base + offset, INODEDIR, sizeof(name->n_base) - offset);
+ strlcpy(name->n_path, name->n_base, sizeof(name->n_path));
}
+#endif
-#define addtoname(N, C) \
-do { \
- strcat((N)->n_path, "/"); strcat((N)->n_path, C); \
+#define addtoname(N, C) \
+do { \
+ if ((N)->n_path[strlen((N)->n_path)-1] != OS_DIRSEPC) \
+ strlcat((N)->n_path, OS_DIRSEP, sizeof((N)->n_path)); \
+ strlcat((N)->n_path, (C), sizeof((N)->n_path)); \
} while(0)
-static void namei_HandleToVolDir(namei_t *name, IHandle_t *ih)
+#ifdef AFS_NT40_ENV
+static void
+namei_HandleToVolDir(namei_t * name, IHandle_t * ih)
+{
+ /* X:\Vol_XXXXXXX.data */
+ b32_string_t str1;
+ char *namep;
+
+ namei_HandleToInodeDir(name, ih);
+ /* nt_drive added to name by namei_HandleToInodeDir() */
+ namep = name->n_voldir;
+ (void)memcpy(namep, "\\Vol_", 5);
+ namep += 5;
+ (void)strcpy(namep, int_to_base32(str1, ih->ih_vid));
+ namep += strlen(namep);
+ memcpy(namep, ".data", 5);
+ namep += 5;
+ *namep = '\0';
+ addtoname(name, name->n_voldir);
+}
+#else
+static void
+namei_HandleToVolDir(namei_t * name, IHandle_t * ih)
{
lb64_string_t tmp;
namei_HandleToInodeDir(name, ih);
- (void) int32_to_flipbase64(tmp, (int64_t)(ih->ih_vid & 0xff));
- (void) strcpy(name->n_voldir1, tmp);
+ (void)int32_to_flipbase64(tmp, (int64_t) (ih->ih_vid & 0xff));
+ strlcpy(name->n_voldir1, tmp, sizeof(name->n_voldir1));
addtoname(name, name->n_voldir1);
- (void) int32_to_flipbase64(tmp, (int64_t)ih->ih_vid);
- (void) strcpy(name->n_voldir2, tmp);
+ (void)int32_to_flipbase64(tmp, (int64_t) ih->ih_vid);
+ strlcpy(name->n_voldir2, tmp, sizeof(name->n_voldir2));
addtoname(name, name->n_voldir2);
}
+#endif
/* namei_HandleToName
*
* Constructs a file name for the fully qualified handle.
- * Note that special files end up in /vicepX/InodeDir/Vxx/V*.data/special
*/
-void namei_HandleToName(namei_t *name, IHandle_t *ih)
+#ifdef AFS_NT40_ENV
+/* Note that special files end up in X:\Vol_XXXXXXX.data\R */
+void
+namei_HandleToName(namei_t * name, IHandle_t * ih)
+{
+ int vno = (int)(ih->ih_ino & NAMEI_VNODEMASK);
+ int special = (ih->ih_ino & NAMEI_INODESPECIAL)?1:0;
+ int tag = (int)((ih->ih_ino >> NAMEI_TAGSHIFT) & NAMEI_TAGMASK);
+ b32_string_t str1;
+ char *namep;
+ namei_HandleToVolDir(name, ih);
+
+ if (special) {
+ name->n_dir[0] = NAMEI_SPECDIRC;
+ } else {
+ if (vno & 0x1)
+ name->n_dir[0] = 'Q';
+ else
+ name->n_dir[0] = ((vno & 0x1f) >> 1) + 'A';
+
+ }
+ name->n_dir[1] = '\0';
+ addtoname(name, name->n_dir);
+ /* X:\Vol_XXXXXXX.data\X\V_XXXXXXX.XXX */
+ namep = name->n_inode;
+ (void)memcpy(namep, "\\V_", 3);
+ namep += 3;
+ (void)strcpy(namep, int_to_base32(str1, vno));
+ namep += strlen(namep);
+ *(namep++) = '.';
+ (void)strcpy(namep, int_to_base32(str1, tag));
+ namep += strlen(namep);
+ addtoname(name, name->n_inode);
+}
+#else
+/* Note that special files end up in /vicepX/InodeDir/Vxx/V*.data/special */
+void
+namei_HandleToName(namei_t * name, IHandle_t * ih)
{
- lb64_string_t str;
int vno = (int)(ih->ih_ino & NAMEI_VNODEMASK);
-
+ lb64_string_t str;
+
namei_HandleToVolDir(name, ih);
if (vno == NAMEI_VNODESPECIAL) {
- (void) strcpy(name->n_dir1, NAMEI_SPECDIR);
+ strlcpy(name->n_dir1, NAMEI_SPECDIR, sizeof(name->n_dir1));
addtoname(name, name->n_dir1);
name->n_dir2[0] = '\0';
- }
- else {
- (void) int32_to_flipbase64(str, VNO_DIR1(vno));
- (void) strcpy(name->n_dir1, str);
+ } else {
+ (void)int32_to_flipbase64(str, VNO_DIR1(vno));
+ strlcpy(name->n_dir1, str, sizeof(name->n_dir1));
addtoname(name, name->n_dir1);
- (void) int32_to_flipbase64(str, VNO_DIR2(vno));
- (void) strcpy(name->n_dir2, str);
+ (void)int32_to_flipbase64(str, VNO_DIR2(vno));
+ strlcpy(name->n_dir2, str, sizeof(name->n_dir2));
addtoname(name, name->n_dir2);
}
- (void) int64_to_flipbase64(str, (int64_t)ih->ih_ino);
- (void) strcpy(name->n_inode, str);
+ (void)int64_to_flipbase64(str, (int64_t) ih->ih_ino);
+ strlcpy(name->n_inode, str, sizeof(name->n_inode));
addtoname(name, name->n_inode);
}
+#endif
+#ifndef AFS_NT40_ENV
/* The following is a warning to tell sys-admins to not muck about in this
* name space.
*/
#define VICE_README "These files and directories are a part of the AFS \
-namespace. Modifying them\nin any way will result in loss of AFS data.\n"
-int namei_ViceREADME(char *partition)
+namespace. Modifying them\nin any way will result in loss of AFS data,\n\
+ownership and permissions included.\n"
+int
+namei_ViceREADME(char *partition)
{
- char filename[32];
- int fd;
-
- /* Create the inode directory if we're starting for the first time */
- sprintf(filename, "%s/%s", partition, INODEDIR);
- mkdir(filename, 0700);
-
- sprintf(filename, "%s/%s/README", partition, INODEDIR);
- fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0444);
- if (fd >= 0) {
- write(fd, VICE_README, strlen(VICE_README));
- close(fd);
- }
- return(errno);
+ char filename[32];
+ int fd;
+
+ /* Create the inode directory if we're starting for the first time */
+ snprintf(filename, sizeof filename, "%s" OS_DIRSEP "%s", partition,
+ INODEDIR);
+ mkdir(filename, 0700);
+
+ snprintf(filename, sizeof filename,
+ "%s" OS_DIRSEP "%s" OS_DIRSEP "README",
+ partition, INODEDIR);
+ fd = OS_OPEN(filename, O_WRONLY | O_CREAT | O_TRUNC, 0444);
+ if (fd != INVALID_FD) {
+ (void)OS_WRITE(fd, VICE_README, strlen(VICE_README));
+ OS_CLOSE(fd);
+ }
+ return (errno);
}
+#endif
+/* namei_CreateDataDirectories
+ *
+ * If creating the file failed because of ENOENT or ENOTDIR, try
+ * creating all the directories first.
+ */
+#ifdef AFS_NT40_ENV
+static int
+namei_CreateDataDirectories(namei_t * name, int *created)
+{
+ char tmp[256];
+ char *s;
+ int i;
+ *created = 0;
+ snprintf(tmp, 256, "%s" OS_DIRSEP "%s", name->n_drive, name->n_voldir);
+
+ if (mkdir(tmp) < 0) {
+ if (errno != EEXIST)
+ return -1;
+ } else
+ *created = 1;
+
+ s = tmp;
+ s += strlen(tmp);
+
+ *s++ = OS_DIRSEPC;
+ *(s + 1) = '\0';
+ for (i = 'A'; i <= NAMEI_SPECDIRC; i++) {
+ *s = (char)i;
+ if (mkdir(tmp) < 0 && errno != EEXIST)
+ return -1;
+ }
+ return 0;
+}
+#else
#define create_dir() \
do { \
if (mkdir(tmp, 0700)<0) { \
else { \
*created = 1; \
} \
-} while (0)
+} while (0)
#define create_nextdir(A) \
do { \
- strcat(tmp, "/"); strcat(tmp, A); create_dir(); \
+ strcat(tmp, OS_DIRSEP); strcat(tmp, A); create_dir(); \
} while(0)
-/* namei_CreateDataDirectories
- *
- * If creating the file failed because of ENOENT or ENOTDIR, try
- * creating all the directories first.
- */
-static int namei_CreateDataDirectories(namei_t *name, int *created)
+static int
+namei_CreateDataDirectories(namei_t * name, int *created)
{
char tmp[256];
*created = 0;
- (void) strcpy(tmp, name->n_base);
+ strlcpy(tmp, name->n_base, sizeof(tmp));
create_dir();
create_nextdir(name->n_voldir1);
create_nextdir(name->n_dir2);
}
return 0;
-}
+}
+#endif
+#ifndef AFS_NT40_ENV
/* delTree(): Deletes an entire tree of directories (no files)
* Input:
* root : Full path to the subtree. Should be big enough for PATH_MAX
* Output:
* errp : errno of the first error encountered during the directory cleanup.
* *errp should have been initialized to 0.
- *
+ *
* Return Values:
- * -1 : If errors were encountered during cleanup and error is set to
+ * -1 : If errors were encountered during cleanup and error is set to
* the first errno.
* 0 : Success.
*
static int
delTree(char *root, char *tree, int *errp)
{
- char *cp;
- DIR *ds;
- struct dirent *dirp;
- struct stat st;
-
- if (*tree) {
- /* delete the children first */
- cp = strchr(tree, '/');
- if (cp) {
- delTree(root, cp+1, errp);
- *cp = '\0';
- }
- else
- cp = tree + strlen(tree); /* move cp to the end of string tree */
-
- /* now delete all entries in this dir */
- if ( (ds = opendir(root)) != (DIR *)NULL) {
- errno = 0;
- while ((dirp = readdir(ds))) {
- /* ignore . and .. */
- if (!strcmp(dirp->d_name, ".") || !strcmp(dirp->d_name, ".."))
- continue;
- /* since root is big enough, we reuse the space to
- * concatenate the dirname to the current tree
- */
- strcat(root, "/");
- strcat(root, dirp->d_name);
- if ( stat(root, &st) == 0 && S_ISDIR(st.st_mode)) {
- /* delete this subtree */
- delTree(root, cp+1, errp);
+ char *cp;
+ DIR *ds;
+ struct dirent *dirp;
+ struct afs_stat st;
+
+ if (*tree) {
+ /* delete the children first */
+ cp = strchr(tree, OS_DIRSEPC);
+ if (cp) {
+ delTree(root, cp + 1, errp);
+ *cp = '\0';
} else
- *errp = *errp ? *errp : errno;
-
- /* recover path to our cur tree by truncating it to
- * its original len
- */
- *cp = 0;
- }
- if (!errno)
- closedir(ds);
- }
-
- /* finally axe the current dir */
- if (rmdir(root))
- *errp = *errp ? *errp : errno;
-
-#ifndef AFS_PTHREAD_ENV /* let rx get some work done */
- IOMGR_Poll();
+ cp = tree + strlen(tree); /* move cp to the end of string tree */
+
+ /* now delete all entries in this dir */
+ if ((ds = opendir(root)) != (DIR *) NULL) {
+ errno = 0;
+ while ((dirp = readdir(ds))) {
+ /* ignore . and .. */
+ if (!strcmp(dirp->d_name, ".") || !strcmp(dirp->d_name, ".."))
+ continue;
+ /* since root is big enough, we reuse the space to
+ * concatenate the dirname to the current tree
+ */
+ strcat(root, OS_DIRSEP);
+ strcat(root, dirp->d_name);
+ if (afs_stat(root, &st) == 0 && S_ISDIR(st.st_mode)) {
+ /* delete this subtree */
+ delTree(root, cp + 1, errp);
+ } else
+ *errp = *errp ? *errp : errno;
+
+ /* recover path to our cur tree by truncating it to
+ * its original len
+ */
+ *cp = 0;
+ }
+ /* if (!errno) -- closedir not implicit if we got an error */
+ closedir(ds);
+ }
+
+ /* finally axe the current dir */
+ if (rmdir(root))
+ *errp = *errp ? *errp : errno;
+
+#ifndef AFS_PTHREAD_ENV /* let rx get some work done */
+ IOMGR_Poll();
#endif /* !AFS_PTHREAD_ENV */
- } /* if valid tree */
-
- /* if we encountered errors during cleanup, we return a -1 */
- if (*errp)
- return -1;
+ }
+
+ /* if valid tree */
+ /* if we encountered errors during cleanup, we return a -1 */
+ if (*errp)
+ return -1;
+
+ return 0;
- return 0;
-
}
+#endif
/* namei_RemoveDataDirectories
* Return Values:
* Returns 0 on success.
- * Returns -1 on error. Typically, callers ignore this error bcause we
+ * Returns -1 on error. Typically, callers ignore this error because we
* can continue running if the removes fail. The salvage process will
- * finish tidying up for us. We only use the n_base and n_voldir1 entries
- * and only do rmdir's.
+ * finish tidying up for us.
*/
-static int namei_RemoveDataDirectories(namei_t *name)
+#ifdef AFS_NT40_ENV
+static int
+namei_RemoveDataDirectories(namei_t * name)
+{
+ int code = 0;
+ char *path;
+ char tmp[256];
+ int i;
+
+ snprintf(tmp, 256, "%s" OS_DIRSEP "%s", name->n_drive, name->n_voldir);
+
+ path = tmp;
+ path += strlen(path);
+ *path++ = OS_DIRSEPC;
+ *(path + 1) = '\0';
+ for (i = 'A'; i <= NAMEI_SPECDIRC; i++) {
+ *path = (char)i;
+ if (rmdir(name->n_path) < 0 && errno != ENOENT)
+ code = -1;
+ }
+
+ if (!code) {
+ /* Delete the Vol_NNNNNN.data directory. */
+ path--;
+ *path = '\0';
+ if (rmdir(name->n_path) < 0 && errno != ENOENT) {
+ code = -1;
+ }
+ }
+ return code;
+}
+#else
+/*
+ * We only use the n_base and n_voldir1 entries
+ * and only do rmdir's.
+ */
+static int
+namei_RemoveDataDirectories(namei_t * name)
{
- char pbuf[MAXPATHLEN], *path = pbuf;
- int prefixlen = strlen(name->n_base), err = 0;
-
- strcpy(path, name->n_path);
+ int code = 0;
+ char *path;
+ int prefixlen = strlen(name->n_base), err = 0;
+ int vollen = strlen(name->n_voldir1);
+ char pbuf[MAXPATHLEN];
- /* move past the prefix */
- path = path+prefixlen+1; /* skip over the trailing / */
+ path = pbuf;
- /* now delete all dirs upto path */
- return delTree(pbuf, path, &err);
-
-}
+ strlcpy(path, name->n_path, sizeof(pbuf));
+
+ /* move past the prefix and n_voldir1 */
+ path = path + prefixlen + 1 + vollen + 1; /* skip over the trailing / */
+
+ /* now delete all dirs upto path */
+ code = delTree(pbuf, path, &err);
+
+ /* We've now deleted everything under /n_base/n_voldir1/n_voldir2 that
+ * we could. Do not delete /n_base/n_voldir1, since doing such might
+ * interrupt another thread trying to create a volume. We could introduce
+ * some locking to make this safe (or only remove it for whole-partition
+ * salvages), but by not deleting it we only leave behind a maximum of
+ * 256 empty directories. So at least for now, don't bother. */
+ return code;
+}
+#endif
/* Create the file in the name space.
*
* details of the inode numbers. This only allows for 7 volume special
* types, but if we get that far, this could should be dead by then.
*/
-Inode namei_MakeSpecIno(int volid, int type)
+Inode
+namei_MakeSpecIno(int volid, int type)
{
Inode ino;
ino = NAMEI_INODESPECIAL;
+#ifdef AFS_NT40_ENV
+ ino |= type;
+ /* tag is always 0 for special */
+#else
type &= NAMEI_TAGMASK;
- ino |= ((Inode)type) << NAMEI_TAGSHIFT;
- ino |= ((Inode)volid) << NAMEI_UNIQSHIFT;
+ ino |= ((Inode) type) << NAMEI_TAGSHIFT;
+ ino |= ((Inode) volid) << NAMEI_UNIQSHIFT;
+#endif
return ino;
}
-/* SetOGM - set owner group and mode bits from parm and tag
- *
+#ifdef AFS_NT40_ENV
+/* SetOGM */
+static int
+SetOGM(FD_t fd, int parm, int tag)
+{
+ return -1;
+}
+
+static int
+SetWinOGM(FD_t fd, int p1, int p2)
+{
+ BOOL code;
+ FILETIME ftime;
+
+ ftime.dwHighDateTime = p1;
+ ftime.dwLowDateTime = p2;
+
+ code = SetFileTime(fd, &ftime, NULL /*access*/, NULL /*write*/);
+ if (!code)
+ return -1;
+ return 0;
+}
+
+static int
+GetWinOGM(FD_t fd, int *p1, int *p2)
+{
+ BOOL code;
+ FILETIME ftime;
+
+ code = GetFileTime(fd, &ftime, NULL /*access*/, NULL /*write*/);
+ if (!code)
+ return -1;
+
+ *p1 = ftime.dwHighDateTime;
+ *p2 = ftime.dwLowDateTime;
+
+ return 0;
+}
+
+static int
+CheckOGM(FdHandle_t *fdP, int p1)
+{
+ int ogm_p1, ogm_p2;
+
+ if (GetWinOGM(fdP->fd_fd, &ogm_p1, &ogm_p2)) {
+ return -1;
+ }
+
+ if (ogm_p1 != p1) {
+ return -1;
+ }
+
+ return 0;
+}
+#else /* AFS_NT40_ENV */
+/* SetOGM - set owner group and mode bits from parm and tag */
+static int
+SetOGM(FD_t fd, int parm, int tag)
+{
+/*
* owner - low 15 bits of parm.
* group - next 15 bits of parm.
* mode - 2 bits of parm, then lowest = 3 bits of tag.
*/
-static int SetOGM(int fd, int parm, int tag)
-{
int owner, group, mode;
owner = parm & 0x7fff;
group = (parm >> 15) & 0x7fff;
- if (fchown(fd, owner, group)<0)
+ if (fchown(fd, owner, group) < 0)
return -1;
mode = (parm >> 27) & 0x18;
mode |= tag & 0x7;
- if (fchmod(fd, mode)<0)
+ if (fchmod(fd, mode) < 0)
return -1;
-
return 0;
-
}
/* GetOGM - get parm and tag from owner, group and mode bits. */
-static void GetOGMFromStat(struct stat *status, int *parm, int *tag)
+static void
+GetOGMFromStat(struct afs_stat_st *status, int *parm, int *tag)
{
*parm = status->st_uid | (status->st_gid << 15);
*parm |= (status->st_mode & 0x18) << 27;
*tag = status->st_mode & 0x7;
}
-static int GetOGM(int fd, int *parm, int *tag)
+static int
+GetOGM(FdHandle_t *fdP, int *parm, int *tag)
{
- struct stat status;
- if (fstat(fd, &status)<0)
+ struct afs_stat_st status;
+ if (afs_fstat(fdP->fd_fd, &status) < 0)
return -1;
-
GetOGMFromStat(&status, parm, tag);
return 0;
}
-int big_vno = 0; /* Just in case we ever do 64 bit vnodes. */
+static int
+CheckOGM(FdHandle_t *fdP, int p1)
+{
+ int parm, tag;
+
+ if (GetOGM(fdP, &parm, &tag) < 0)
+ return -1;
+ if (parm != p1)
+ return -1;
+
+ return 0;
+}
+#endif /* !AFS_NT40_ENV */
+
+int big_vno = 0; /* Just in case we ever do 64 bit vnodes. */
/* Derive the name and create it O_EXCL. If that fails we have an error.
* Get the tag from a free column in the link table.
*/
-Inode namei_icreate(IHandle_t *lh, char *part, int p1, int p2, int p3, int p4)
+#ifdef AFS_NT40_ENV
+Inode
+namei_icreate(IHandle_t * lh, char *part, afs_uint32 p1, afs_uint32 p2, afs_uint32 p3, afs_uint32 p4)
{
namei_t name;
- int fd = -1;
+ FD_t fd = INVALID_FD;
+ int code = 0;
+ int created_dir = 0;
+ IHandle_t tmp;
+ FdHandle_t *fdP;
+ FdHandle_t tfd;
+ int type, tag;
+ int ogm_p1, ogm_p2;
+ char *p;
+ b32_string_t str1;
+
+ memset((void *)&tmp, 0, sizeof(IHandle_t));
+ memset(&tfd, 0, sizeof(FdHandle_t));
+
+ tmp.ih_dev = nt_DriveToDev(part);
+ if (tmp.ih_dev == -1) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (p2 == INODESPECIAL) {
+ /* Parameters for special file:
+ * p1 - volume id - goes into owner/group/mode
+ * p2 - vnode == INODESPECIAL
+ * p3 - type
+ * p4 - parent volume id
+ */
+ ogm_p1 = p1;
+ ogm_p2 = p2;
+ type = p3;
+ tmp.ih_vid = p4; /* Use parent volume id, where this file will be. */
+ tmp.ih_ino = namei_MakeSpecIno(p1, p3);
+ } else {
+ int vno = p2 & NAMEI_VNODEMASK;
+ /* Parameters for regular file:
+ * p1 - volume id
+ * p2 - vnode
+ * p3 - uniq
+ * p4 - dv
+ */
+
+ if (vno != p2) {
+ big_vno++;
+ errno = EINVAL;
+ return -1;
+ }
+
+ tmp.ih_vid = p1;
+ tmp.ih_ino = (Inode) p2;
+ ogm_p1 = p3;
+ ogm_p2 = p4;
+ }
+
+ namei_HandleToName(&name, &tmp);
+ p = strrchr((char *)&name.n_path, '.');
+ p++;
+ for (tag = 0; tag < NAMEI_MAXVOLS; tag++) {
+ *p = *int_to_base32(str1, tag);
+ fd = OS_OPEN((char *)&name.n_path, O_CREAT | O_RDWR | O_EXCL, 0666);
+ if (fd == INVALID_FD) {
+ if (errno == ENOTDIR || errno == ENOENT) {
+ if (namei_CreateDataDirectories(&name, &created_dir) == 0)
+ fd = OS_OPEN((char *)&name.n_path, O_CREAT | O_RDWR | O_EXCL, 0666);
+ }
+ }
+
+ if (fd != INVALID_FD)
+ break;
+ if (p2 == INODESPECIAL && p3 == VI_LINKTABLE)
+ break;
+ }
+ if (fd == INVALID_FD) {
+ code = -1;
+ goto bad;
+ }
+ tmp.ih_ino &= ~(((Inode) NAMEI_TAGMASK) << NAMEI_TAGSHIFT);
+ tmp.ih_ino |= (((Inode) tag) << NAMEI_TAGSHIFT);
+
+ if (!code) {
+ if (SetWinOGM(fd, ogm_p1, ogm_p2)) {
+ errno = OS_ERROR(EBADF);
+ code = -1;
+ }
+ }
+
+ if (!code) {
+ if (p2 != INODESPECIAL) {
+ if (fd == INVALID_FD) {
+ errno = ENOENT;
+ code = nt_unlink((char *)&name.n_path);
+ code = -1;
+ goto bad;
+ }
+ fdP = IH_OPEN(lh);
+ if (fdP == NULL) {
+ code = -1;
+ goto bad;
+ }
+ code = namei_SetLinkCount(fdP, tmp.ih_ino, 1, 0);
+ FDH_CLOSE(fdP);
+ } else if (p2 == INODESPECIAL && p3 == VI_LINKTABLE) {
+ if (fd == INVALID_FD)
+ goto bad;
+ /* hack at tmp to setup for set link count call. */
+ tfd.fd_fd = fd;
+ code = namei_SetLinkCount(&tfd, (Inode) 0, 1, 0);
+ }
+ }
+
+bad:
+ if (fd != INVALID_FD)
+ OS_CLOSE(fd);
+
+ if (code || (fd == INVALID_FD)) {
+ if (p2 != INODESPECIAL) {
+ fdP = IH_OPEN(lh);
+ if (fdP) {
+ namei_SetLinkCount(fdP, tmp.ih_ino, 0, 0);
+ FDH_CLOSE(fdP);
+ }
+ }
+
+ if (created_dir) {
+ int save_errno = errno;
+ namei_RemoveDataDirectories(&name);
+ errno = save_errno;
+ }
+ }
+ return (code || (fd == INVALID_FD)) ? (Inode) -1 : tmp.ih_ino;
+}
+#else /* !AFS_NT40_ENV */
+Inode
+namei_icreate(IHandle_t * lh, char *part, afs_uint32 p1, afs_uint32 p2, afs_uint32 p3, afs_uint32 p4)
+{
+ namei_t name;
+ int fd = INVALID_FD;
int code = 0;
int created_dir = 0;
IHandle_t tmp;
FdHandle_t tfd;
int tag;
int ogm_parm;
-
-
- memset((void*)&tmp, 0, sizeof(IHandle_t));
+ memset((void *)&tmp, 0, sizeof(IHandle_t));
+ memset(&tfd, 0, sizeof(FdHandle_t));
tmp.ih_dev = volutil_GetPartitionID(part);
if (tmp.ih_dev == -1) {
return -1;
}
- if (p2 == -1 ) {
+ if (p2 == -1) {
/* Parameters for special file:
* p1 - volume id - goes into owner/group/mode
* p2 - vnode == -1
* p4 - parent volume id
*/
ogm_parm = p1;
- tag = p3;
- tmp.ih_vid = p4; /* Use parent volume id, where this file will be.*/
+ tag = p3;
+ tmp.ih_vid = p4; /* Use parent volume id, where this file will be. */
tmp.ih_ino = namei_MakeSpecIno(p1, p3);
- }
- else {
- int vno = p2 & NAMEI_VNODEMASK;
+ } else {
+ int vno = p2 & NAMEI_VNODEMASK;
/* Parameters for regular file:
* p1 - volume id
* p2 - vnode
*/
if (vno != p2) {
- big_vno ++;
+ big_vno++;
errno = EINVAL;
return -1;
}
if (tag < 0)
goto bad;
- /* name is <uniq(p3)><tag><vno(p2)> */
tmp.ih_vid = p1;
- tmp.ih_ino = (Inode)p2;
- tmp.ih_ino |= ((Inode)tag)<<NAMEI_TAGSHIFT;
- tmp.ih_ino |= ((Inode)p3)<<NAMEI_UNIQSHIFT;
+ tmp.ih_ino = (Inode) p2;
+ /* name is <uniq(p3)><tag><vno(p2)> */
+ tmp.ih_ino |= ((Inode) tag) << NAMEI_TAGSHIFT;
+ tmp.ih_ino |= ((Inode) p3) << NAMEI_UNIQSHIFT;
ogm_parm = p4;
}
namei_HandleToName(&name, &tmp);
- fd = open(name.n_path, O_CREAT|O_EXCL|O_TRUNC|O_RDWR, 0);
- if (fd < 0) {
+ fd = OS_OPEN(name.n_path, O_CREAT | O_EXCL | O_RDWR, 0);
+ if (fd == INVALID_FD) {
if (errno == ENOTDIR || errno == ENOENT) {
- if (namei_CreateDataDirectories(&name, &created_dir)<0)
+ if (namei_CreateDataDirectories(&name, &created_dir) < 0)
goto bad;
- fd = open(name.n_path, O_CREAT|O_EXCL|O_TRUNC|O_RDWR, 0);
- if (fd < 0)
+ fd = OS_OPEN(name.n_path, O_CREAT | O_EXCL | O_RDWR,
+ 0);
+ if (fd == INVALID_FD)
goto bad;
- }
- else {
+ } else {
goto bad;
}
}
- if (SetOGM(fd, ogm_parm, tag)<0) {
- close(fd);
- fd = -1;
+ if (SetOGM(fd, ogm_parm, tag) < 0) {
+ OS_CLOSE(fd);
+ fd = INVALID_FD;
goto bad;
}
- if (p2 == -1 && p3 == VI_LINKTABLE) {
+ if (p2 == (afs_uint32)-1 && p3 == VI_LINKTABLE) {
/* hack at tmp to setup for set link count call. */
+ memset((void *)&tfd, 0, sizeof(FdHandle_t)); /* minimalistic still, but a little cleaner */
+ tfd.fd_ih = &tmp;
tfd.fd_fd = fd;
- code = namei_SetLinkCount(&tfd, (Inode)0, 1, 0);
+ code = namei_SetLinkCount(&tfd, (Inode) 0, 1, 0);
}
-bad:
- if (fd >= 0)
- close(fd);
+ bad:
+ if (fd != INVALID_FD)
+ OS_CLOSE(fd);
- if (code || (fd < 0)) {
+ if (code || (fd == INVALID_FD)) {
if (p2 != -1) {
fdP = IH_OPEN(lh);
if (fdP) {
}
}
}
- return (code || (fd<0)) ? (Inode)-1 : tmp.ih_ino;
+ return (code || (fd == INVALID_FD)) ? (Inode) - 1 : tmp.ih_ino;
}
-
+#endif
/* namei_iopen */
-int namei_iopen(IHandle_t *h)
+FD_t
+namei_iopen(IHandle_t * h)
{
- int fd;
+ FD_t fd;
namei_t name;
/* Convert handle to file name. */
namei_HandleToName(&name, h);
- fd = open(name.n_path, O_RDWR, 0666);
+ fd = OS_OPEN((char *)&name.n_path, O_RDWR, 0666);
return fd;
}
* handle passed in _is_ for the inode. We only check p1 for the special
* files.
*/
-int namei_dec(IHandle_t *ih, Inode ino, int p1)
+int
+namei_dec(IHandle_t * ih, Inode ino, int p1)
{
int count = 0;
namei_t name;
if ((ino & NAMEI_INODESPECIAL) == NAMEI_INODESPECIAL) {
IHandle_t *tmp;
- int inode_p1, tag;
- int type = (int)((ino>>NAMEI_TAGSHIFT) & NAMEI_TAGMASK);
+ int type = (int)((ino >> NAMEI_TAGSHIFT) & NAMEI_TAGMASK);
/* Verify this is the right file. */
IH_INIT(tmp, ih->ih_dev, ih->ih_vid, ino);
- fdP = IH_OPEN(tmp);
+ namei_HandleToName(&name, tmp);
+
+ fdP = IH_OPEN(tmp);
if (fdP == NULL) {
IH_RELEASE(tmp);
- errno = EINVAL;
+ errno = OS_ERROR(ENOENT);
return -1;
}
- if ((GetOGM(fdP->fd_fd, &inode_p1, &tag)<0) || (inode_p1 != p1)) {
+ if (CheckOGM(fdP, p1) < 0) {
FDH_REALLYCLOSE(fdP);
IH_RELEASE(tmp);
- errno = EINVAL;
+ errno = OS_ERROR(EINVAL);
return -1;
}
-
+
/* If it's the link table itself, decrement the link count. */
if (type == VI_LINKTABLE) {
- if ((count = namei_GetLinkCount(fdP, (Inode)0, 1))<0) {
+ if ((count = namei_GetLinkCount(fdP, (Inode) 0, 1, 0, 1)) < 0) {
FDH_REALLYCLOSE(fdP);
IH_RELEASE(tmp);
return -1;
}
- count --;
- if (namei_SetLinkCount(fdP, (Inode)0, count<0 ? 0 : count, 1)<0) {
+ count--;
+ if (namei_SetLinkCount(fdP, (Inode) 0, count < 0 ? 0 : count, 1) <
+ 0) {
FDH_REALLYCLOSE(fdP);
IH_RELEASE(tmp);
return -1;
}
- if (count>0) {
- FDH_REALLYCLOSE(fdP);
+ if (count > 0) {
+ FDH_CLOSE(fdP);
IH_RELEASE(tmp);
return 0;
}
}
-
- namei_HandleToName(&name, tmp);
- if ((code = unlink(name.n_path)) == 0) {
+
+ if ((code = OS_UNLINK(name.n_path)) == 0) {
if (type == VI_LINKTABLE) {
/* Try to remove directory. If it fails, that's ok.
* Salvage will clean up.
*/
- (void) namei_RemoveDataDirectories(&name);
+ char *slash = strrchr(name.n_path, OS_DIRSEPC);
+ if (slash) {
+ /* avoid an rmdir() on the file we just unlinked */
+ *slash = '\0';
+ }
+ (void)namei_RemoveDataDirectories(&name);
}
}
FDH_REALLYCLOSE(fdP);
IH_RELEASE(tmp);
- }
- else {
+ } else {
/* Get a file descriptor handle for this Inode */
fdP = IH_OPEN(ih);
if (fdP == NULL) {
return -1;
}
- if ((count = namei_GetLinkCount(fdP, ino, 1))<0) {
+ if ((count = namei_GetLinkCount(fdP, ino, 1, 0, 1)) < 0) {
FDH_REALLYCLOSE(fdP);
return -1;
}
- count --;
+ count--;
if (count >= 0) {
- if (namei_SetLinkCount(fdP, ino, count, 1)<0) {
+ if (namei_SetLinkCount(fdP, ino, count, 1) < 0) {
+ FDH_REALLYCLOSE(fdP);
+ return -1;
+ }
+ } else {
+ IHandle_t *th;
+ IH_INIT(th, ih->ih_dev, ih->ih_vid, ino);
+ Log("Warning: Lost ref on ihandle dev %d vid %d ino %lld\n",
+ th->ih_dev, th->ih_vid, (afs_int64)th->ih_ino);
+ IH_RELEASE(th);
+
+ /* If we're less than 0, someone presumably unlinked;
+ don't bother setting count to 0, but we need to drop a lock */
+ if (namei_SetLinkCount(fdP, ino, 0, 1) < 0) {
FDH_REALLYCLOSE(fdP);
return -1;
}
}
- if (count == 0 ) {
- IHandle_t th = *ih;
- th.ih_ino = ino;
- namei_HandleToName(&name, &th);
- code = unlink(name.n_path);
+ if (count == 0) {
+ IHandle_t *th;
+ IH_INIT(th, ih->ih_dev, ih->ih_vid, ino);
+
+ namei_HandleToName(&name, th);
+ IH_RELEASE(th);
+ code = OS_UNLINK(name.n_path);
}
FDH_CLOSE(fdP);
}
return code;
}
-int namei_inc(IHandle_t *h, Inode ino, int p1)
+int
+namei_inc(IHandle_t * h, Inode ino, int p1)
{
int count;
int code = 0;
FdHandle_t *fdP;
if ((ino & NAMEI_INODESPECIAL) == NAMEI_INODESPECIAL) {
- int type = (int)((ino>>NAMEI_TAGSHIFT) & NAMEI_TAGMASK);
+ int type = (int)((ino >> NAMEI_TAGSHIFT) & NAMEI_TAGMASK);
if (type != VI_LINKTABLE)
return 0;
- ino = (Inode)0;
+ ino = (Inode) 0;
}
/* Get a file descriptor handle for this Inode */
return -1;
}
- if ((count = namei_GetLinkCount(fdP, ino, 1))<0)
+ if ((count = namei_GetLinkCount(fdP, ino, 1, 0, 1)) < 0)
code = -1;
else {
- count ++;
+ count++;
if (count > 7) {
- errno = EINVAL;
+ errno = OS_ERROR(EINVAL);
code = -1;
count = 7;
}
- if (namei_SetLinkCount(fdP, ino, count, 1)<0)
+ if (namei_SetLinkCount(fdP, ino, count, 1) < 0)
code = -1;
}
if (code) {
return code;
}
+#ifndef AFS_NT40_ENV
+int
+namei_replace_file_by_hardlink(IHandle_t *hLink, IHandle_t *hTarget)
+{
+ afs_int32 code;
+ namei_t nameLink;
+ namei_t nameTarget;
+
+ /* Convert handle to file name. */
+ namei_HandleToName(&nameLink, hLink);
+ namei_HandleToName(&nameTarget, hTarget);
+
+ OS_UNLINK(nameLink.n_path);
+ code = link(nameTarget.n_path, nameLink.n_path);
+ return code;
+}
+
+int
+namei_copy_on_write(IHandle_t *h)
+{
+ afs_int32 code = 0;
+ FD_t fd;
+ namei_t name;
+ FdHandle_t *fdP;
+ struct afs_stat_st tstat;
+ afs_foff_t offset;
+
+ namei_HandleToName(&name, h);
+ if (afs_stat(name.n_path, &tstat) < 0)
+ return EIO;
+ if (tstat.st_nlink > 1) { /* do a copy on write */
+ char path[259];
+ char *buf;
+ afs_size_t size;
+ ssize_t tlen;
+
+ fdP = IH_OPEN(h);
+ if (!fdP)
+ return EIO;
+ snprintf(path, sizeof(path), "%s-tmp", name.n_path);
+ fd = OS_OPEN(path, O_CREAT | O_EXCL | O_RDWR, 0);
+ if (fd == INVALID_FD) {
+ FDH_CLOSE(fdP);
+ return EIO;
+ }
+ buf = malloc(8192);
+ if (!buf) {
+ OS_CLOSE(fd);
+ OS_UNLINK(path);
+ FDH_CLOSE(fdP);
+ return ENOMEM;
+ }
+ size = tstat.st_size;
+ offset = 0;
+ while (size) {
+ tlen = size > 8192 ? 8192 : size;
+ if (FDH_PREAD(fdP, buf, tlen, offset) != tlen)
+ break;
+ if (OS_WRITE(fd, buf, tlen) != tlen)
+ break;
+ size -= tlen;
+ offset += tlen;
+ }
+ OS_CLOSE(fd);
+ FDH_REALLYCLOSE(fdP);
+ free(buf);
+ if (size)
+ code = EIO;
+ else {
+ OS_UNLINK(name.n_path);
+ code = rename(path, name.n_path);
+ }
+ }
+ return code;
+}
+#endif
+
/************************************************************************
* File Name Structure
************************************************************************
*
* Using this information we can see that a layout of 256 directories, each
* with 512 subdirectories and each of those having 512 files gives us
- * 256*512*512 = 67108864 AFS files and directories.
+ * 256*512*512 = 67108864 AFS files and directories.
*
* The volume, vnode, uniquifier and data version, as well as the tag
- * are required, either for finding the file or for salvaging. It's best to
+ * are required, either for finding the file or for salvaging. It's best to
* restrict the name to something that can be mapped into 64 bits so the
* "Inode" is easily comparable (using "==") to other "Inodes". The tag
* is used to distinguish between different versions of the same file
* which are currently in the RW and clones of a volume. See "Link Table
- * Organization" below for more information on the tag. The tag is
- * required in the name of the file to ensure a unique name.
+ * Organization" below for more information on the tag. The tag is
+ * required in the name of the file to ensure a unique name.
+ *
+ * ifdef AFS_NT40_ENV
+ * The data for each volume group is in a separate directory. The name of the
+ * volume is of the form: Vol_NNNNNN.data, where NNNNNN is a base 32
+ * representation of the RW volume ID (even where the RO is the only volume
+ * on the partition). Below that are separate subdirectories for the
+ * AFS directories and special files. There are also 16 directories for files,
+ * hashed on the low 5 bits (recall bit0 is always 0) of the vnode number.
+ * These directories are named:
+ * A - P - 16 file directories.
+ * Q ----- data directory
+ * R ----- special files directory
+ *
+ * The vnode is hashed into the directory using the low bits of the
+ * vnode number.
*
+ * The format of a file name for a regular file is:
+ * Y:\Vol_NNNNNN.data\X\V_IIIIII.J
+ * Y - partition encoded as drive letter, starting with D
+ * NNNNNN - base 32 encoded volume number of RW volume
+ * X - hash directory, as above
+ * IIIIII - base 32 encoded vnode number
+ * J - base 32 encoded tag
+ *
+ * uniq is stored in the dwHighDateTime creation time field
+ * dv is stored in the dwLowDateTime creation time field
+ *
+ * Special inodes are always in the R directory, as above, and are
+ * encoded:
+ * True child volid is stored in the dwHighDateTime creation time field
+ * vnode number is always -1 (Special)
+ * type is the IIIIII part of the filename
+ * uniq is the J part of the filename
+ * parent volume id is implied in the containing directory
+ *
+ * else
* We can store data in the uid, gid and mode bits of the files, provided
* the directories have root only access. This gives us 15 bits for each
* of uid and gid (GNU chown considers 65535 to mean "don't change").
- * There are 9 available mode bits. Adn we need to store a total of
+ * There are 9 available mode bits. Adn we need to store a total of
* 32 (volume id) + 26 (vnode) + 32 (uniquifier) + 32 (data-version) + 3 (tag)
- * or 131 bits somewhere.
+ * or 131 bits somewhere.
*
* The format of a file name for a regular file is:
* /vicepX/AFSIDat/V1/V2/AA/BB/<tag><uniq><vno>
* should be formed so that the leading characters are different as quickly
* as possible, leading to faster discards of incorrect matches in the
* lookup code.
- *
+ *
+ * endif
+ *
*/
* different version of the file (or a different uniquifer) for the BU volume.
* Then one column would be holding the link count of 2 for the RW and RO
* and a different column would hold the link count of 1 for the BU volume.
+ * # ifdef AFS_NT40_ENV
+ * The column used is determined for NT by the uniquifier tag applied to
+ * generate a unique file name in the NTFS namespace. The file name is
+ * of the form "V_<vno>.<tag>" . And the <tag> is also the column number
+ * in the link table.
+ * # else
* Note that we allow only 5 volumes per file, giving 15 bits used in the
* short.
+ * # endif
*/
#define LINKTABLE_WIDTH 2
-#define LINKTABLE_SHIFT 1 /* log 2 = 1 */
+#define LINKTABLE_SHIFT 1 /* log 2 = 1 */
-static void namei_GetLCOffsetAndIndexFromIno(Inode ino, int *offset, int *index)
+/**
+ * compute namei link table file and bit offset from inode number.
+ *
+ * @param[in] ino inode number
+ * @param[out] offset link table file offset
+ * @param[out] index bit offset within 2-byte record
+ *
+ * @internal
+ */
+static void
+namei_GetLCOffsetAndIndexFromIno(Inode ino, afs_foff_t * offset, int *index)
{
- int toff = (int) (ino & NAMEI_VNODEMASK);
- int tindex = (int)((ino>>NAMEI_TAGSHIFT) & NAMEI_TAGMASK);
+ int toff = (int)(ino & NAMEI_VNODEMASK);
+ int tindex = (int)((ino >> NAMEI_TAGSHIFT) & NAMEI_TAGMASK);
- *offset = (toff << LINKTABLE_SHIFT) + 8; /* * 2 + sizeof stamp */
+ *offset = (afs_foff_t) ((toff << LINKTABLE_SHIFT) + 8); /* * 2 + sizeof stamp */
*index = (tindex << 1) + tindex;
}
+#ifdef AFS_PTHREAD_ENV
+/* XXX do static initializers work for WINNT/pthread? */
+pthread_mutex_t _namei_glc_lock = PTHREAD_MUTEX_INITIALIZER;
+#define NAMEI_GLC_LOCK MUTEX_ENTER(&_namei_glc_lock)
+#define NAMEI_GLC_UNLOCK MUTEX_EXIT(&_namei_glc_lock)
+#else /* !AFS_PTHREAD_ENV */
+#define NAMEI_GLC_LOCK
+#define NAMEI_GLC_UNLOCK
+#endif /* !AFS_PTHREAD_ENV */
-/* namei_GetLinkCount
- * If lockit is set, lock the file and leave it locked upon a successful
- * return.
+/**
+ * get the link count of an inode.
+ *
+ * @param[in] h namei link count table file handle
+ * @param[in] ino inode number for which we are requesting a link count
+ * @param[in] lockit if asserted, return with lock held on link table file
+ * @param[in] fixup if asserted, write 1 to link count when read() returns
+ * zero (at EOF)
+ * @param[in] nowrite return success on zero byte read or ZLC
+ *
+ * @post if lockit asserted and lookup was successful, will return with write
+ * lock on link table file descriptor
+ *
+ * @return link count
+ * @retval -1 namei link table i/o error
+ *
+ * @internal
*/
-int namei_GetLinkCount(FdHandle_t *h, Inode ino, int lockit)
+int
+namei_GetLinkCount(FdHandle_t * h, Inode ino, int lockit, int fixup, int nowrite)
{
unsigned short row = 0;
- int offset, index;
+ afs_foff_t offset;
+ ssize_t rc;
+ int index;
+ /* there's no linktable yet. the salvager will create one later */
+ if (h->fd_fd == INVALID_FD && fixup)
+ return 1;
namei_GetLCOffsetAndIndexFromIno(ino, &offset, &index);
if (lockit) {
-#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
- if (lockf(h->fd_fd, F_LOCK, 0) < 0)
-#else
- if (flock(h->fd_fd, LOCK_EX)<0)
-#endif
+ if (FDH_LOCKFILE(h, offset) != 0)
return -1;
}
- if (lseek(h->fd_fd, offset, SEEK_SET) == -1)
+ rc = FDH_PREAD(h, (char*)&row, sizeof(row), offset);
+ if (rc == -1)
goto bad_getLinkByte;
-
- if (read(h->fd_fd, (char*)&row, sizeof(row))!=sizeof(row)) {
+
+ if ((rc == 0 || !((row >> index) & NAMEI_TAGMASK)) && fixup && nowrite)
+ return 1;
+ if (rc == 0 && fixup) {
+ /*
+ * extend link table and write a link count of 1 for ino
+ *
+ * in order to make MT-safe, truncation (extension really)
+ * must happen under a mutex
+ */
+ NAMEI_GLC_LOCK;
+ if (FDH_SIZE(h) >= offset+sizeof(row)) {
+ NAMEI_GLC_UNLOCK;
+ goto bad_getLinkByte;
+ }
+ FDH_TRUNC(h, offset+sizeof(row));
+ row = 1 << index;
+ rc = FDH_PWRITE(h, (char *)&row, sizeof(row), offset);
+ NAMEI_GLC_UNLOCK;
+ }
+ if (rc != sizeof(row)) {
goto bad_getLinkByte;
}
-
- return (int) ((row >> index) & NAMEI_TAGMASK);
- bad_getLinkByte:
+ if (fixup && !((row >> index) & NAMEI_TAGMASK)) {
+ /*
+ * fix up zlc
+ *
+ * in order to make this mt-safe, we need to do the read-modify-write
+ * under a mutex. thus, we repeat the read inside the lock.
+ */
+ NAMEI_GLC_LOCK;
+ rc = FDH_PREAD(h, (char *)&row, sizeof(row), offset);
+ if (rc == sizeof(row)) {
+ row |= 1<<index;
+ rc = FDH_PWRITE(h, (char *)&row, sizeof(row), offset);
+ }
+ NAMEI_GLC_UNLOCK;
+ if (rc != sizeof(row))
+ goto bad_getLinkByte;
+ }
+
+ return (int)((row >> index) & NAMEI_TAGMASK);
+
+ bad_getLinkByte:
if (lockit)
-#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
- lockf(h->fd_fd, F_ULOCK, 0);
-#else
- flock(h->fd_fd, LOCK_UN);
-#endif
+ FDH_UNLOCKFILE(h, offset);
return -1;
}
+int
+namei_SetNonZLC(FdHandle_t * h, Inode ino)
+{
+ return namei_GetLinkCount(h, ino, 0, 1, 0);
+}
+
/* Return a free column index for this vnode. */
-static int GetFreeTag(IHandle_t *ih, int vno)
+static int
+GetFreeTag(IHandle_t * ih, int vno)
{
FdHandle_t *fdP;
- int offset;
+ afs_foff_t offset;
int col;
int coldata;
short row;
- int code;
+ ssize_t nBytes;
fdP = IH_OPEN(ih);
return -1;
/* Only one manipulates at a time. */
-#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
- if (lockf(fdP->fd_fd, F_LOCK, 0) < 0) {
-#else
- if (flock(fdP->fd_fd, LOCK_EX)<0) {
-#endif
+ if (FDH_LOCKFILE(fdP, offset) != 0) {
FDH_REALLYCLOSE(fdP);
return -1;
}
-
- offset = (vno << LINKTABLE_SHIFT) + 8; /* * 2 + sizeof stamp */
- if (lseek(fdP->fd_fd, offset, SEEK_SET) == -1) {
- goto badGetFreeTag;
- }
-
- code = read(fdP->fd_fd, (char*)&row, sizeof(row));
- if (code != sizeof(row)) {
- if (code != 0)
+
+ offset = (vno << LINKTABLE_SHIFT) + 8; /* * 2 + sizeof stamp */
+
+ nBytes = FDH_PREAD(fdP, (char *)&row, sizeof(row), offset);
+ if (nBytes != sizeof(row)) {
+ if (nBytes != 0)
goto badGetFreeTag;
row = 0;
}
-
+
/* Now find a free column in this row and claim it. */
- for (col = 0; col<NAMEI_MAXVOLS; col++) {
- coldata = 7 << (col * 3);
- if ((row & coldata) == 0)
- break;
+ for (col = 0; col < NAMEI_MAXVOLS; col++) {
+ coldata = 7 << (col * 3);
+ if ((row & coldata) == 0)
+ break;
}
- if (col >= NAMEI_MAXVOLS)
+ if (col >= NAMEI_MAXVOLS) {
+ errno = ENOSPC;
goto badGetFreeTag;
+ }
coldata = 1 << (col * 3);
row |= coldata;
- if (lseek(fdP->fd_fd, offset, SEEK_SET) == -1) {
- goto badGetFreeTag;
- }
- if (write(fdP->fd_fd, (char*)&row, sizeof(row))!=sizeof(row)) {
+ if (FDH_PWRITE(fdP, (char *)&row, sizeof(row), offset) != sizeof(row)) {
goto badGetFreeTag;
}
- FDH_SYNC(fdP);
-#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
- lockf(fdP->fd_fd, F_ULOCK, 0);
-#else
- flock(fdP->fd_fd, LOCK_UN);
-#endif
- FDH_REALLYCLOSE(fdP);
- return col;;
+ (void)FDH_SYNC(fdP);
+ FDH_UNLOCKFILE(fdP, offset);
+ FDH_CLOSE(fdP);
+ return col;
- badGetFreeTag:
-#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
- lockf(fdP->fd_fd, F_ULOCK, 0);
-#else
- flock(fdP->fd_fd, LOCK_UN);
-#endif
+ badGetFreeTag:
+ FDH_UNLOCKFILE(fdP, offset);
FDH_REALLYCLOSE(fdP);
return -1;
}
* If locked is set, assume file is locked. Otherwise, lock file before
* proceeding to modify it.
*/
-int namei_SetLinkCount(FdHandle_t *fdP, Inode ino, int count, int locked)
+int
+namei_SetLinkCount(FdHandle_t * fdP, Inode ino, int count, int locked)
{
- int offset, index;
+ afs_foff_t offset;
+ int index;
unsigned short row;
- int junk;
- int code = -1;
+ int bytesRead;
+ ssize_t nBytes = -1;
namei_GetLCOffsetAndIndexFromIno(ino, &offset, &index);
if (!locked) {
-#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
- if (lockf(fdP->fd_fd, F_LOCK, 0) < 0) {
-#else
- if (flock(fdP->fd_fd, LOCK_EX)<0) {
-#endif
+ if (FDH_LOCKFILE(fdP, offset) != 0) {
return -1;
}
}
- if (lseek(fdP->fd_fd, offset, SEEK_SET) == -1) {
- errno = EBADF;
- goto bad_SetLinkCount;
- }
-
- code = read(fdP->fd_fd, (char*)&row, sizeof(row));
- if (code != sizeof(row)) {
- if (code != 0) {
- errno = EBADF;
+ nBytes = FDH_PREAD(fdP, (char *)&row, sizeof(row), offset);
+ if (nBytes != sizeof(row)) {
+ if (nBytes != 0) {
+ errno = OS_ERROR(EBADF);
goto bad_SetLinkCount;
}
row = 0;
}
-
- junk = 7 << index;
+
+ bytesRead = 7 << index;
count <<= index;
- row &= (unsigned short)~junk;
+ row &= (unsigned short)~bytesRead;
row |= (unsigned short)count;
- if (lseek(fdP->fd_fd, offset, SEEK_SET) == -1) {
- errno = EBADF;
+ if (FDH_PWRITE(fdP, (char *)&row, sizeof(short), offset) != sizeof(short)) {
+ errno = OS_ERROR(EBADF);
goto bad_SetLinkCount;
}
+ (void)FDH_SYNC(fdP);
- if (write(fdP->fd_fd, (char*)&row, sizeof(short)) != sizeof(short)) {
- errno = EBADF;
- goto bad_SetLinkCount;
- }
- FDH_SYNC(fdP);
+ nBytes = 0;
- code = 0;
-
-bad_SetLinkCount:
-#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
- lockf(fdP->fd_fd, F_ULOCK, 0);
-#else
- flock(fdP->fd_fd, LOCK_UN);
-#endif
+ bad_SetLinkCount:
+ FDH_UNLOCKFILE(fdP, offset);
- return code;
+ /* disallowed above 7, so... */
+ return (int)nBytes;
}
/* ListViceInodes - write inode data to a results file. */
static int DecodeInode(char *dpath, char *name, struct ViceInodeInfo *info,
- int volid);
-static int DecodeVolumeName(char *name, int *vid);
-static int namei_ListAFSSubDirs(IHandle_t *dirIH,
- int (*write_fun)(FILE *, struct ViceInodeInfo *,
- char *, char *),
- FILE *fp,
- int (*judgeFun)(struct ViceInodeInfo *, int vid),
- int singleVolumeNumber);
+ unsigned int volid);
+static int DecodeVolumeName(char *name, unsigned int *vid);
+static int namei_ListAFSSubDirs(IHandle_t * dirIH,
+ int (*write_fun) (FD_t,
+ struct ViceInodeInfo *,
+ char *, char *), FD_t fp,
+ int (*judgeFun) (struct ViceInodeInfo *,
+ afs_uint32 vid, void *),
+ afs_uint32 singleVolumeNumber, void *rock);
/* WriteInodeInfo
*
- * Write the inode data to the results file.
+ * Write the inode data to the results file.
*
* Returns -2 on error, 0 on success.
*
* This is written as a callback simply so that other listing routines
* can use the same inode reading code.
*/
-static int WriteInodeInfo(FILE *fp, struct ViceInodeInfo *info, char *dir,
- char *name)
+static int
+WriteInodeInfo(FD_t fp, struct ViceInodeInfo *info, char *dir, char *name)
{
- int n;
- n = fwrite(info, sizeof(*info), 1, fp);
- return (n == 1) ? 0 : -2;
+ size_t n;
+ n = OS_WRITE(fp, info, sizeof(*info));
+ return (n == sizeof(*info)) ? 0 : -2;
}
-int mode_errors; /* Number of errors found in mode bits on directories. */
-void VerifyDirPerms(char *path)
+int mode_errors; /* Number of errors found in mode bits on directories. */
+void
+VerifyDirPerms(char *path)
{
- struct stat status;
+ struct afs_stat_st status;
- if (stat(path, &status)<0) {
+ if (afs_stat(path, &status) < 0) {
Log("Unable to stat %s. Please manually verify mode bits for this"
" directory\n", path);
- }
- else {
+ } else {
if (((status.st_mode & 0777) != 0700) || (status.st_uid != 0))
- mode_errors ++;
+ mode_errors++;
}
}
-/* ListViceInodes
+/**
* Fill the results file with the requested inode information.
*
- * Return values:
- * 0 - success
- * -1 - complete failure, salvage should terminate.
- * -2 - not enough space on partition, salvager has error message for this.
- *
* This code optimizes single volume salvages by just looking at that one
- * volume's directory.
+ * volume's directory.
*
- * If the resultFile is NULL, then don't call the write routine.
+ * @param[in] devname device name string
+ * @param[in] moutnedOn vice partition mount point
+ * @param[in] resultFile result file in which to write inode
+ * metadata. If NULL, write routine is not
+ * called.
+ * @param[in] judgeInode filter function pointer. if not NULL, only
+ * inodes for which this routine returns non-
+ * zero will be written to the results file.
+ * @param[in] singleVolumeNumber volume id filter
+ * @param[out] forcep always set to 0 for namei impl
+ * @param[in] forceR not used by namei impl
+ * @param[in] wpath not used by namei impl
+ * @param[in] rock opaque pointer passed to judgeInode
+ *
+ * @return operation status
+ * @retval 0 success
+ * @retval -1 complete failure, salvage should terminate.
+ * @retval -2 not enough space on partition, salvager has error message
+ * for this.
*/
-int ListViceInodes(char *devname, char *mountedOn, char *resultFile,
- int (*judgeInode)(struct ViceInodeInfo *info, int vid),
- int singleVolumeNumber, int *forcep,
- int forceR, char *wpath)
+int
+ListViceInodes(char *devname, char *mountedOn, FD_t inodeFile,
+ int (*judgeInode) (struct ViceInodeInfo * info, afs_uint32 vid, void *rock),
+ afs_uint32 singleVolumeNumber, int *forcep, int forceR, char *wpath,
+ void *rock)
{
- FILE *fp = (FILE*)-1;
int ninodes;
- struct stat status;
- if (resultFile) {
- fp = fopen(resultFile, "w");
- if (!fp) {
- Log("Unable to create inode description file %s\n", resultFile);
- return -1;
- }
- }
+ *forcep = 0; /* no need to salvage until further notice */
/* Verify protections on directories. */
mode_errors = 0;
VerifyDirPerms(mountedOn);
- ninodes = namei_ListAFSFiles(mountedOn, WriteInodeInfo, fp,
- judgeInode, singleVolumeNumber);
+ ninodes =
+ namei_ListAFSFiles(mountedOn, WriteInodeInfo, inodeFile, judgeInode,
+ singleVolumeNumber, rock);
- if (!resultFile)
+ if (inodeFile == INVALID_FD)
return ninodes;
if (ninodes < 0) {
- fclose(fp);
return ninodes;
}
- if (fflush(fp) == EOF) {
- Log("Unable to successfully flush inode file for %s\n", mountedOn);
- fclose(fp);
- return -2;
- }
- if (fsync(fileno(fp)) == -1) {
+ if (OS_SYNC(inodeFile) == -1) {
Log("Unable to successfully fsync inode file for %s\n", mountedOn);
- fclose(fp);
- return -2;
- }
- if (fclose(fp) == EOF) {
- Log("Unable to successfully close inode file for %s\n", mountedOn);
return -2;
}
/*
* Paranoia: check that the file is really the right size
*/
- if (stat(resultFile, &status) == -1) {
- Log("Unable to successfully stat inode file for %s\n", mountedOn);
- return -2;
- }
- if (status.st_size != ninodes * sizeof (struct ViceInodeInfo)) {
- Log("Wrong size (%d instead of %d) in inode file for %s\n",
- status.st_size, ninodes * sizeof (struct ViceInodeInfo),
+ if (OS_SIZE(inodeFile) != ninodes * sizeof(struct ViceInodeInfo)) {
+ Log("Wrong size (%d instead of %lu) in inode file for %s\n",
+ (int) OS_SIZE(inodeFile),
+ (long unsigned int) ninodes * sizeof(struct ViceInodeInfo),
mountedOn);
return -2;
}
}
-/* namei_ListAFSFiles
- *
+/**
* Collect all the matching AFS files on the drive.
* If singleVolumeNumber is non-zero, just return files for that volume.
*
- * Returns <0 on error, else number of files found to match.
+ * @param[in] dev vice partition path
+ * @param[in] writeFun function pointer to a function which
+ * writes inode information to FILE fp
+ * @param[in] fp file stream where inode metadata is sent
+ * @param[in] judgeFun filter function pointer. if not NULL,
+ * only entries for which a non-zero value
+ * is returned are written to fp
+ * @param[in] singleVolumeNumber volume id filter. if nonzero, only
+ * process files for that specific volume id
+ * @param[in] rock opaque pointer passed into writeFun and
+ * judgeFun
+ *
+ * @return operation status
+ * @retval <0 error
+ * @retval >=0 number of matching files found
*/
-int namei_ListAFSFiles(char *dev,
- int (*writeFun)(FILE *, struct ViceInodeInfo *, char *,
- char *),
- FILE *fp,
- int (*judgeFun)(struct ViceInodeInfo *, int),
- int singleVolumeNumber)
+int
+namei_ListAFSFiles(char *dev,
+ int (*writeFun) (FD_t, struct ViceInodeInfo *, char *,
+ char *),
+ FD_t fp,
+ int (*judgeFun) (struct ViceInodeInfo *, afs_uint32, void *),
+ afs_uint32 singleVolumeNumber, void *rock)
{
IHandle_t ih;
namei_t name;
int ninodes = 0;
- DIR *dirp1, *dirp2;
- struct dirent *dp1, *dp2;
+ DIR *dirp1;
+ struct dirent *dp1;
+#ifndef AFS_NT40_ENV
+ DIR *dirp2;
+ struct dirent *dp2;
char path2[512];
+#endif
#ifdef DELETE_ZLC
static void FreeZLCList(void);
#endif
- memset((void*)&ih, 0, sizeof(IHandle_t));
+ memset((void *)&ih, 0, sizeof(IHandle_t));
+#ifdef AFS_NT40_ENV
+ ih.ih_dev = nt_DriveToDev(dev);
+#else
ih.ih_dev = volutil_GetPartitionID(dev);
+#endif
if (singleVolumeNumber) {
ih.ih_vid = singleVolumeNumber;
namei_HandleToVolDir(&name, &ih);
- ninodes = namei_ListAFSSubDirs(&ih, writeFun, fp,
- judgeFun, singleVolumeNumber);
+ ninodes =
+ namei_ListAFSSubDirs(&ih, writeFun, fp, judgeFun,
+ singleVolumeNumber, rock);
if (ninodes < 0)
return ninodes;
- }
- else {
+ } else {
/* Find all volume data directories and descend through them. */
namei_HandleToInodeDir(&name, &ih);
ninodes = 0;
if (!dirp1)
return 0;
while ((dp1 = readdir(dirp1))) {
- if (*dp1->d_name == '.') continue;
- (void) strcpy(path2, name.n_path);
- (void) strcat(path2, "/");
- (void) strcat(path2, dp1->d_name);
+#ifdef AFS_NT40_ENV
+ /* Heirarchy is one level on Windows */
+ if (!DecodeVolumeName(dp1->d_name, &ih.ih_vid)) {
+ ninodes +=
+ namei_ListAFSSubDirs(&ih, writeFun, fp, judgeFun,
+ 0, rock);
+ }
+#else
+ if (*dp1->d_name == '.')
+ continue;
+ snprintf(path2, sizeof(path2), "%s" OS_DIRSEP "%s", name.n_path,
+ dp1->d_name);
dirp2 = opendir(path2);
if (dirp2) {
while ((dp2 = readdir(dirp2))) {
- if (*dp2->d_name == '.') continue;
+ if (*dp2->d_name == '.')
+ continue;
if (!DecodeVolumeName(dp2->d_name, &ih.ih_vid)) {
- ninodes += namei_ListAFSSubDirs(&ih, writeFun, fp,
- judgeFun, 0);
+ ninodes +=
+ namei_ListAFSSubDirs(&ih, writeFun, fp, judgeFun,
+ 0, rock);
}
}
closedir(dirp2);
}
+#endif
}
closedir(dirp1);
}
return ninodes;
}
+#ifdef DELETE_ZLC
+static void AddToZLCDeleteList(char dir, char *name);
+static void DeleteZLCFiles(char *path);
+#endif
+
+/**
+ * examine a namei volume special file.
+ *
+ * @param[in] path1 volume special directory path
+ * @param[in] dname directory entry name
+ * @param[in] myIH inode handle to volume directory
+ * @param[out] linkHandle namei link count fd handle. if
+ * the inode in question is the link
+ * table, then the FdHandle is populated
+ * @param[in] writeFun metadata write function pointer
+ * @param[in] fp file pointer where inode metadata
+ * is written by (*writeFun)()
+ * @param[in] judgeFun inode filter function pointer. if
+ * not NULL, only inodes for which this
+ * function returns non-zero are recorded
+ * into fp by writeFun
+ * @param[in] singleVolumeNumer volume id filter. if non-zero, only
+ * inodes associated with this volume id
+ * are recorded by writeFun
+ * @param[in] rock opaque pointer passed to writeFun and
+ * judgeFun
+ *
+ * @return operation status
+ * @retval 1 count this inode
+ * @retval 0 don't count this inode
+ * @retval -1 failure
+ *
+ * @internal
+ */
+static int
+_namei_examine_special(char * path1,
+ char * dname,
+ IHandle_t * myIH,
+ FdHandle_t * linkHandle,
+ int (*writeFun) (FD_t, struct ViceInodeInfo *, char *,
+ char *),
+ FD_t fp,
+ int (*judgeFun) (struct ViceInodeInfo *, afs_uint32, void *),
+ int singleVolumeNumber,
+ void *rock)
+{
+ int ret = 0;
+ struct ViceInodeInfo info;
+ afs_uint32 inode_vgid;
+
+ if (DecodeInode(path1, dname, &info, myIH->ih_vid) < 0) {
+ ret = 0;
+ goto error;
+ }
+
+#ifdef AFS_NT40_ENV
+ inode_vgid = myIH->ih_vid;
+#else
+ inode_vgid = (info.inodeNumber >> NAMEI_UNIQSHIFT) & NAMEI_UNIQMASK;
+#endif
+
+ if (info.u.param[2] != VI_LINKTABLE) {
+ info.linkCount = 1;
+ } else if ((info.u.param[0] != myIH->ih_vid) ||
+ (inode_vgid != myIH->ih_vid)) {
+ /* VGID encoded in linktable filename and/or OGM data isn't
+ * consistent with VGID encoded in namei path */
+ Log("namei_ListAFSSubDirs: warning: inconsistent linktable "
+ "filename \"%s" OS_DIRSEP "%s\"; salvager will delete it "
+ "(dir_vgid=%u, inode_vgid=%u, ogm_vgid=%u)\n",
+ path1, dname, myIH->ih_vid,
+ (unsigned int)inode_vgid,
+ info.u.param[0]);
+ } else {
+ char path2[512];
+ /* Open this handle */
+ snprintf(path2, sizeof(path2),
+ "%s" OS_DIRSEP "%s", path1, dname);
+ linkHandle->fd_fd = OS_OPEN(path2, Testing ? O_RDONLY : O_RDWR, 0666);
+ info.linkCount =
+ namei_GetLinkCount(linkHandle, (Inode) 0, 1, 1, Testing);
+ }
+
+ if (!judgeFun ||
+ (*judgeFun) (&info, singleVolumeNumber, rock)) {
+ ret = (*writeFun) (fp, &info, path1, dname);
+ if (ret < 0) {
+ Log("_namei_examine_special: writeFun returned %d\n", ret);
+ ret = -1;
+ } else {
+ ret = 1;
+ }
+ }
+ error:
+ return ret;
+}
-/* namei_ListAFSSubDirs
+/**
+ * examine a namei file.
*
+ * @param[in] path3 volume special directory path
+ * @param[in] dname directory entry name
+ * @param[in] myIH inode handle to volume directory
+ * @param[in] linkHandle namei link count fd handle.
+ * @param[in] writeFun metadata write function pointer
+ * @param[in] fp file pointer where inode metadata
+ * is written by (*writeFun)()
+ * @param[in] judgeFun inode filter function pointer. if
+ * not NULL, only inodes for which this
+ * function returns non-zero are recorded
+ * into fp by writeFun
+ * @param[in] singleVolumeNumer volume id filter. if non-zero, only
+ * inodes associated with this volume id
+ * are recorded by writeFun
+ * @param[in] rock opaque pointer passed to writeFun and
+ * judgeFun
*
- * Return values:
- * < 0 - an error
- * > = 0 - number of AFS files found.
+ * @return operation status
+ * @retval 1 count this inode
+ * @retval 0 don't count this inode
+ * @retval -1 failure
+ * @retval -2 request ZLC delete
+ *
+ * @internal
*/
-static int namei_ListAFSSubDirs(IHandle_t *dirIH,
- int (*writeFun)(FILE *, struct ViceInodeInfo *,
- char *, char *),
- FILE *fp,
- int (*judgeFun)(struct ViceInodeInfo *, int),
- int singleVolumeNumber)
+static int
+_namei_examine_reg(char * path3,
+ char * dname,
+ IHandle_t * myIH,
+ FdHandle_t * linkHandle,
+ int (*writeFun) (FD_t, struct ViceInodeInfo *, char *,
+ char *),
+ FD_t fp,
+ int (*judgeFun) (struct ViceInodeInfo *, afs_uint32, void *),
+ int singleVolumeNumber,
+ void *rock)
{
+ int ret = 0;
+ struct ViceInodeInfo info;
+#ifdef DELETE_ZLC
+ int dirl; /* Windows-only (one level hash dir) */
+#endif
+
+ if (DecodeInode(path3, dname, &info, myIH->ih_vid) < 0) {
+ goto error;
+ }
+
+ info.linkCount =
+ namei_GetLinkCount(linkHandle,
+ info.inodeNumber, 1, 1, Testing);
+ if (info.linkCount == 0) {
+#ifdef DELETE_ZLC
+ Log("Found 0 link count file %s" OS_DIRSEP "%s, deleting it.\n", path3, dname);
+#ifdef AFS_SALSRV_ENV
+ /* defer -- the AddToZLCDeleteList() interface is not MT-safe */
+ ret = -2;
+#else /* !AFS_SALSRV_ENV */
+ dirl = path3[strlen(path3)-1];
+ AddToZLCDeleteList((char)dirl, dname);
+#endif /* !AFS_SALSRV_ENV */
+#else /* !DELETE_ZLC */
+ Log("Found 0 link count file %s" OS_DIRSEP "%s.\n", path3,
+ dname);
+#endif
+ goto error;
+ }
+
+ if (!judgeFun ||
+ (*judgeFun) (&info, singleVolumeNumber, rock)) {
+ ret = (*writeFun) (fp, &info, path3, dname);
+ if (ret < 0) {
+ Log("_namei_examine_reg: writeFun returned %d\n", ret);
+ ret = -1;
+ } else {
+ ret = 1;
+ }
+ }
+
+ error:
+ return ret;
+}
+
+/**
+ * listsubdirs work queue node.
+ */
+struct listsubdirs_work_node {
+#ifdef AFS_SALSRV_ENV
+ int *error; /**< *error set if an error was
+ * encountered in any listsubdirs
+ * thread. */
+#endif
+
+ IHandle_t * IH; /**< volume directory handle */
+ FdHandle_t *linkHandle; /**< namei link count fd handle. when
+ * examinining the link table special
+ * inode, this will be pointed at the
+ * link table
+ */
+ FD_t fp; /**< file pointer for writeFun */
+
+ /** function which will write inode metadata to fp */
+ int (*writeFun) (FD_t, struct ViceInodeInfo *, char *, char *);
+
+ /** inode filter function */
+ int (*judgeFun) (struct ViceInodeInfo *, afs_uint32, void *);
+ int singleVolumeNumber; /**< volume id filter */
+ void * rock; /**< pointer passed to writeFun and judgeFun */
+ int code; /**< return code from examine function */
+ int special; /**< asserted when this is a volume
+ * special file */
+};
+
+/**
+ * simple wrapper around _namei_examine_special and _namei_examine_reg.
+ *
+ * @param[in] work the struct listsubdirs_work_node for the associated
+ * "list subdirs" job
+ * @param[in] dir the directory to examine
+ * @param[in] filename the filename in 'dir' to examine
+ *
+ * @return operation status
+ * @retval 1 count this inode
+ * @retval 0 don't count this inode
+ * @retval -1 failure
+ */
+static_inline int
+_namei_examine_file(const struct listsubdirs_work_node *work, char *dir,
+ char *filename)
+{
+ if (work->special) {
+ return _namei_examine_special(dir, filename, work->IH,
+ work->linkHandle, work->writeFun, work->fp,
+ work->judgeFun, work->singleVolumeNumber,
+ work->rock);
+ } else {
+ return _namei_examine_reg(dir, filename, work->IH,
+ work->linkHandle, work->writeFun, work->fp,
+ work->judgeFun, work->singleVolumeNumber,
+ work->rock);
+ }
+}
+
+
+#ifdef AFS_SALSRV_ENV
+/** @addtogroup afs_vol_salsrv_pario */
+/*@{*/
+
+/**
+ * arguments for the _namei_examine_file_cbk callback function.
+ */
+struct listsubdirs_args {
+ const struct listsubdirs_work_node *work; /**< arguments that are the same
+ * for all invocations of
+ * _namei_examine_file_cbk, in
+ * threads */
+ int *result; /**< where we can store the return code of _namei_examine_file */
+
+ char dir[512]; /**< directory to examine */
+ char filename[256]; /**< filename in 'dir' to examine */
+};
+
+/**
+ * a node in the list of results of listsubdir jobs.
+ */
+struct listsubdirs_result {
+ struct rx_queue q;
+ int inodes; /**< return value from _namei_examine_file */
+};
+
+/**
+ * clean up a list of 'struct listsubdirs_result's and interpret the results.
+ *
+ * @param[in] resultlist a list of 'struct listsubdirs_result's
+ *
+ * @return number of inodes found
+ * @retval -1 error
+ */
+static int
+_namei_listsubdirs_cleanup_results(struct rx_queue *resultlist)
+{
+ struct listsubdirs_result *res, *nres;
+ int ret = 0;
+
+ for(queue_Scan(resultlist, res, nres, listsubdirs_result)) {
+ if (ret < 0) {
+ /* noop, retain erroneous error code */
+ } else if (res->inodes < 0) {
+ ret = -1;
+ } else {
+ ret += res->inodes;
+ }
+
+ queue_Remove(res);
+ free(res);
+ res = NULL;
+ }
+
+ return ret;
+}
+
+/**
+ * wait for the spawned listsubdirs jobs to finish, and return how many inodes
+ * they found.
+ *
+ * @param[in] queue queue to wait to finish
+ * @param[in] resultlist list of 'struct listsubdirs_result's that the queued
+ * jobs are storing their results in
+ *
+ * @return number of inodes found
+ * @retval -1 error
+ */
+static int
+_namei_listsubdirs_wait(struct afs_work_queue *queue, struct rx_queue *resultlist)
+{
+ int code;
+
+ code = afs_wq_wait_all(queue);
+ if (code) {
+ return -1;
+ }
+
+ return _namei_listsubdirs_cleanup_results(resultlist);
+}
+
+/**
+ * work queue entry point for examining namei files.
+ *
+ * @param[in] queue pointer to struct Vwork_queue
+ * @param[in] node pointer to struct Vwork_queue_node
+ * @param[in] queue_rock opaque pointer to struct salsrv_pool_state
+ * @param[in] node_rock opaque pointer to struct listsubdirs_work_node
+ * @param[in] caller_rock opaque pointer to struct salsrv_worker_thread_state
+ *
+ * @return operation status
+ *
+ * @see Vwork_queue_callback_func_t
+ *
+ * @internal
+ */
+static int
+_namei_examine_file_cbk(struct afs_work_queue *queue,
+ struct afs_work_queue_node *node,
+ void *queue_rock,
+ void *node_rock,
+ void *caller_rock)
+{
+ int code;
+ struct listsubdirs_args *args = node_rock;
+ const struct listsubdirs_work_node * work = args->work;
+ char *dir = args->dir;
+ char *filename = args->filename;
+
+ code = _namei_examine_file(work, dir, filename);
+
+ *(args->result) = code;
+
+ if (code < 0) {
+ *(work->error) = 1;
+ /* we've errored, so no point in letting more jobs continue */
+ afs_wq_shutdown(queue);
+ }
+
+ return 0;
+}
+
+static pthread_once_t wq_once = PTHREAD_ONCE_INIT;
+static pthread_key_t wq_key;
+
+/**
+ * create the wq_key key for storing a work queue.
+ */
+static void
+_namei_wq_keycreate(void)
+{
+ osi_Assert(pthread_key_create(&wq_key, NULL) == 0);
+}
+
+/**
+ * set the work queue for this thread to use for backgrounding namei ops.
+ *
+ * The work queue will be used in ListAFSSubdirs (called indirectly by
+ * ListViceInodes) to examine files in parallel.
+ *
+ * @param[in] wq the work queue to use
+ */
+void
+namei_SetWorkQueue(struct afs_work_queue *wq)
+{
+ osi_Assert(pthread_once(&wq_once, _namei_wq_keycreate) == 0);
+
+ osi_Assert(pthread_setspecific(wq_key, wq) == 0);
+}
+
+/**
+ * enqueue an examine file work unit.
+ *
+ * @param[in] work the _namei_examine_file arguments that are common to
+ * all callers within the same ListAFSFiles operation
+ * @param[in] dir the specific directory to look at (string will be
+ * copied; can be stack/temporary memory)
+ * @param[in] filename the filename to look at (string will be copied; can be
+ * stack/temporary memory)
+ * @param[in] wq work queue to enqueue this work unit to
+ * @param[in] resultlist the list to append the 'struct listsubdirs_result' to
+ * for the enqueued work unit
+ *
+ * @return operation status
+ * @retval 0 success
+ * @retval -1 fatal error
+ *
+ * @note errors MUST be indicated by a -1 error code and nothing else, to be
+ * compatible with _namei_examine_reg and _namei_examine_special
+ *
+ * @internal
+ */
+static int
+_namei_examine_file_spawn(const struct listsubdirs_work_node *work,
+ const char *dir, const char *filename,
+ struct afs_work_queue *wq,
+ struct rx_queue *resultlist)
+{
+ int code, ret = 0;
+ struct listsubdirs_args *args = NULL;
+ struct listsubdirs_result *result = NULL;
+ struct afs_work_queue_node *node = NULL;
+ struct afs_work_queue_add_opts opts;
+
+ args = malloc(sizeof(*args));
+ if (args == NULL) {
+ ret = -1;
+ goto error;
+ }
+
+ result = malloc(sizeof(*result));
+ if (result == NULL) {
+ ret = -1;
+ goto error;
+ }
+
+ code = afs_wq_node_alloc(&node);
+ if (code) {
+ ret = -1;
+ goto error;
+ }
+ code = afs_wq_node_set_detached(node);
+ if (code) {
+ ret = -1;
+ goto error;
+ }
+
+ args->work = work;
+ args->result = &result->inodes;
+ strlcpy(args->dir, dir, sizeof(args->dir));
+ strlcpy(args->filename, filename, sizeof(args->filename));
+
+ code = afs_wq_node_set_callback(node,
+ &_namei_examine_file_cbk,
+ args, &free);
+ if (code) {
+ ret = -1;
+ goto error;
+ }
+ args = NULL;
+
+ afs_wq_add_opts_init(&opts);
+ opts.donate = 1;
+
+ code = afs_wq_add(wq, node, &opts);
+ if (code) {
+ ret = -1;
+ goto error;
+ }
+ node = NULL;
+
+ queue_Append(resultlist, result);
+ result = NULL;
+
+ error:
+ if (node) {
+ afs_wq_node_put(node);
+ node = NULL;
+ }
+ if (args) {
+ free(args);
+ args = NULL;
+ }
+ if (result) {
+ free(result);
+ result = NULL;
+ }
+
+ return ret;
+}
+
+/*@}*/
+#else /* !AFS_SALSRV_ENV */
+# define _namei_examine_file_spawn(work, dir, file, wq, resultlist) \
+ _namei_examine_file(work, dir, file)
+#endif /* !AFS_SALSRV_ENV */
+
+/**
+ * traverse and check inodes.
+ *
+ * @param[in] dirIH volume group directory handle
+ * @param[in] writeFun function pointer which will write inode
+ * metadata to FILE stream fp
+ * @param[in] fp file stream where inode metadata gets
+ * written
+ * @param[in] judgeFun inode filter function. if not NULL, only
+ * inodes for which the filter returns non-zero
+ * will be written out by writeFun
+ * @param[in] singleVolumeNumber volume id filter. only inodes matching this
+ * filter are written out by writeFun
+ * @param[in] rock opaque pointer passed to judgeFun and writeFun
+ *
+ * @return operation status
+ * @retval <0 error
+ * @retval >=0 number of matching inodes found
+ *
+ * @todo the salsrv implementation may consume a lot of
+ * memory for a large volume. at some point we should
+ * probably write a background thread to asynchronously
+ * clean up the resultlist nodes to reduce memory footprint
+ *
+ * @internal
+ */
+static int
+namei_ListAFSSubDirs(IHandle_t * dirIH,
+ int (*writeFun) (FD_t, struct ViceInodeInfo *, char *,
+ char *),
+ FD_t fp,
+ int (*judgeFun) (struct ViceInodeInfo *, afs_uint32, void *),
+ afs_uint32 singleVolumeNumber, void *rock)
+{
+ int code = 0, ret = 0;
IHandle_t myIH = *dirIH;
namei_t name;
- char path1[512], path2[512], path3[512];
- DIR *dirp1, *dirp2, *dirp3;
- struct dirent *dp1, *dp2, *dp3;
- struct ViceInodeInfo info;
+ char path1[512], path3[512];
+ DIR *dirp1, *dirp3;
+#ifndef AFS_NT40_ENV
+ DIR *dirp2;
+ struct dirent *dp2;
+ char path2[512];
+#endif
+ struct dirent *dp1, *dp3;
FdHandle_t linkHandle;
int ninodes = 0;
-#ifdef DELETE_ZLC
- int i;
- static void AddToZLCDeleteList(char dir, char *name);
- static void DeleteZLCFiles(char *path);
+ struct listsubdirs_work_node work;
+#ifdef AFS_SALSRV_ENV
+ int error = 0;
+ struct afs_work_queue *wq;
+ int wq_up = 0;
+ struct rx_queue resultlist;
#endif
namei_HandleToVolDir(&name, &myIH);
- (void) strcpy(path1, name.n_path);
+ strlcpy(path1, name.n_path, sizeof(path1));
/* Do the directory containing the special files first to pick up link
* counts.
*/
- (void) strcat(path1, "/");
- (void) strcat(path1, NAMEI_SPECDIR);
+ (void)strcat(path1, OS_DIRSEP);
+ (void)strcat(path1, NAMEI_SPECDIR);
+
+ linkHandle.fd_fd = INVALID_FD;
+#ifdef AFS_SALSRV_ENV
+ osi_Assert(pthread_once(&wq_once, _namei_wq_keycreate) == 0);
+
+ wq = pthread_getspecific(wq_key);
+ if (!wq) {
+ ret = -1;
+ goto error;
+ }
+ wq_up = 1;
+ queue_Init(&resultlist);
+#endif
+
+ memset(&work, 0, sizeof(work));
+ work.linkHandle = &linkHandle;
+ work.IH = &myIH;
+ work.fp = fp;
+ work.writeFun = writeFun;
+ work.judgeFun = judgeFun;
+ work.singleVolumeNumber = singleVolumeNumber;
+ work.rock = rock;
+ work.special = 1;
+#ifdef AFS_SALSRV_ENV
+ work.error = &error;
+#endif
- linkHandle.fd_fd = -1;
dirp1 = opendir(path1);
if (dirp1) {
while ((dp1 = readdir(dirp1))) {
- if (*dp1->d_name == '.') continue;
- if (DecodeInode(path1, dp1->d_name, &info, myIH.ih_vid)<0)
+ if (*dp1->d_name == '.')
continue;
- if (info.u.param[2] != VI_LINKTABLE) {
- info.linkCount = 1;
- }
- else {
- /* Open this handle */
- (void) sprintf(path2, "%s/%s", path1, dp1->d_name);
- linkHandle.fd_fd = open(path2, O_RDONLY, 0666);
- info.linkCount = namei_GetLinkCount(&linkHandle, (Inode)0, 0);
+
+#ifdef AFS_SALSRV_ENV
+ if (error) {
+ closedir(dirp1);
+ ret = -1;
+ goto error;
}
- if (judgeFun && !(*judgeFun)(&info, singleVolumeNumber))
- continue;
+#endif /* AFS_SALSRV_ENV */
+
+ code = _namei_examine_file_spawn(&work, path1, dp1->d_name, wq, &resultlist);
- if ((*writeFun)(fp, &info, path1, dp1->d_name)<0) {
- if (linkHandle.fd_fd >= 0)
- close(linkHandle.fd_fd);
+ switch (code) {
+ case -1:
+ /* fatal error */
closedir(dirp1);
- return -1;
+ ret = -1;
+ goto error;
+
+ case 1:
+ /* count this inode */
+#ifndef AFS_SALSRV_ENV
+ ninodes++;
+#endif
+ break;
}
- ninodes ++;
}
closedir(dirp1);
}
+#ifdef AFS_SALSRV_ENV
+ /* effectively a barrier */
+ code = _namei_listsubdirs_wait(wq, &resultlist);
+ if (code < 0 || error) {
+ ret = -1;
+ goto error;
+ }
+ error = 0;
+ ninodes += code;
+#endif
+
+ if (linkHandle.fd_fd == INVALID_FD) {
+ Log("namei_ListAFSSubDirs: warning: VG %u does not have a link table; "
+ "salvager will recreate it.\n", dirIH->ih_vid);
+ }
+
/* Now run through all the other subdirs */
namei_HandleToVolDir(&name, &myIH);
- (void) strcpy(path1, name.n_path);
-
+ strlcpy(path1, name.n_path, sizeof(path1));
+
+ work.special = 0;
+
dirp1 = opendir(path1);
if (dirp1) {
while ((dp1 = readdir(dirp1))) {
- if (*dp1->d_name == '.') continue;
+#ifndef AFS_NT40_ENV
+ if (*dp1->d_name == '.')
+ continue;
+#endif
if (!strcmp(dp1->d_name, NAMEI_SPECDIR))
continue;
-
+
+#ifndef AFS_NT40_ENV /* This level missing on Windows */
/* Now we've got a next level subdir. */
- (void) strcpy(path2, path1);
- (void) strcat(path2, "/");
- (void) strcat(path2, dp1->d_name);
+ snprintf(path2, sizeof(path2), "%s" OS_DIRSEP "%s",
+ path1, dp1->d_name);
dirp2 = opendir(path2);
if (dirp2) {
while ((dp2 = readdir(dirp2))) {
- if (*dp2->d_name == '.') continue;
-
+ if (*dp2->d_name == '.')
+ continue;
+
/* Now we've got to the actual data */
- (void) strcpy(path3, path2);
- (void) strcat(path3, "/");
- (void) strcat(path3, dp2->d_name);
+ snprintf(path3, sizeof(path3), "%s" OS_DIRSEP "%s",
+ path2, dp2->d_name);
+#else
+ /* Now we've got to the actual data */
+ snprintf(path3, sizeof(path3), "%s" OS_DIRSEP "%s",
+ path1, dp1->d_name);
+#endif
dirp3 = opendir(path3);
if (dirp3) {
while ((dp3 = readdir(dirp3))) {
- if (*dp3->d_name == '.') continue;
- if (DecodeInode(path3, dp3->d_name, &info,
- myIH.ih_vid)<0)
+#ifndef AFS_NT40_ENV
+ if (*dp3->d_name == '.')
continue;
- info.linkCount = namei_GetLinkCount(&linkHandle,
- info.inodeNumber, 0);
- if (info.linkCount == 0) {
-#ifdef DELETE_ZLC
- Log("Found 0 link count file %s/%s, deleting it.\n",
- path3, dp3->d_name);
- AddToZLCDeleteList((char)i, dp3->d_name);
-#else
- Log("Found 0 link count file %s/%s.\n",
- path3, dp3->d_name);
#endif
- continue;
+
+#ifdef AFS_SALSRV_ENV
+ if (error) {
+ closedir(dirp3);
+#ifndef AFS_NT40_ENV
+ closedir(dirp2);
+#endif
+ closedir(dirp1);
+ ret = -1;
+ goto error;
}
- if (judgeFun
- && !(*judgeFun)(&info, singleVolumeNumber))
- continue;
+#endif /* AFS_SALSRV_ENV */
+
+ code = _namei_examine_file_spawn(&work, path3,
+ dp3->d_name, wq,
+ &resultlist);
- if ((*writeFun)(fp, &info, path3, dp3->d_name)<0) {
- close(linkHandle.fd_fd);
+ switch (code) {
+ case -1:
closedir(dirp3);
+#ifndef AFS_NT40_ENV
closedir(dirp2);
+#endif
closedir(dirp1);
- return -1;
+ ret = -1;
+ goto error;
+
+ case 1:
+#ifndef AFS_SALSRV_ENV
+ ninodes++;
+#endif
+ break;
}
- ninodes ++;
}
closedir(dirp3);
}
+#ifndef AFS_NT40_ENV /* This level missing on Windows */
}
closedir(dirp2);
}
+#endif
}
closedir(dirp1);
}
- if (linkHandle.fd_fd >= 0)
- close(linkHandle.fd_fd);
+#ifdef AFS_SALSRV_ENV
+ /* effectively a barrier */
+ code = _namei_listsubdirs_wait(wq, &resultlist);
+ if (code < 0 || error) {
+ ret = -1;
+ goto error;
+ }
+ error = 0;
+ ninodes += code;
+ wq_up = 0;
+#endif
+
if (!ninodes) {
/* Then why does this directory exist? Blow it away. */
namei_HandleToVolDir(&name, dirIH);
namei_RemoveDataDirectories(&name);
}
- return ninodes;
+ error:
+#ifdef AFS_SALSRV_ENV
+ if (wq_up) {
+ afs_wq_wait_all(wq);
+ }
+ _namei_listsubdirs_cleanup_results(&resultlist);
+#endif
+ if (linkHandle.fd_fd != INVALID_FD)
+ OS_CLOSE(linkHandle.fd_fd);
+
+ if (!ret) {
+ ret = ninodes;
+ }
+ return ret;
}
-static int DecodeVolumeName(char *name, int *vid)
+/*@}*/
+
+#ifdef AFS_NT40_ENV
+static int
+DecodeVolumeName(char *name, unsigned int *vid)
+{
+ /* Name begins with "Vol_" and ends with .data. See nt_HandleToVolDir() */
+ char stmp[32];
+ size_t len;
+
+ len = strlen(name);
+ if (len <= 9)
+ return -1;
+ if (strncmp(name, "Vol_", 4))
+ return -1;
+ if (strcmp(name + len - 5, ".data"))
+ return -1;
+ strcpy(stmp, name);
+ stmp[len - 5] = '\0';
+ *vid = base32_to_int(stmp + 4);
+ return 0;
+}
+#else
+static int
+DecodeVolumeName(char *name, unsigned int *vid)
{
- if (strlen(name) <= 2)
+ if (strlen(name) < 1)
return -1;
- *vid = (int) flipbase64_to_int64(name);
+ *vid = (unsigned int)flipbase64_to_int64(name);
return 0;
}
+#endif
/* DecodeInode
*
* Get the inode number from the name.
- * Get
+ *
*/
-static int DecodeInode(char *dpath, char *name, struct ViceInodeInfo *info,
- int volid)
+#ifdef AFS_NT40_ENV
+static int
+DecodeInode(char *dpath, char *name, struct ViceInodeInfo *info,
+ unsigned int volid)
{
char fpath[512];
- struct stat status;
+ int tag, vno;
+ WIN32_FIND_DATA data;
+ HANDLE dirH;
+ char *s, *t;
+ char stmp[16];
+ FdHandle_t linkHandle;
+ char dirl;
+
+ snprintf(fpath, sizeof(fpath), "%s" OS_DIRSEP "%s", dpath, name);
+
+ dirH = FindFirstFileEx(fpath, FindExInfoStandard, &data,
+ FindExSearchNameMatch, NULL,
+ FIND_FIRST_EX_CASE_SENSITIVE);
+ if (dirH == INVALID_HANDLE_VALUE)
+ return -1;
+
+ (void)strcpy(stmp, name);
+ s = strrchr(stmp, '_');
+ if (!s)
+ return -1;
+ s++;
+ t = strrchr(s, '.');
+ if (!t)
+ return -1;
+
+ *t = '\0';
+ vno = base32_to_int(s); /* type for special files */
+ tag = base32_to_int(t+1);
+ info->inodeNumber = ((Inode) tag) << NAMEI_TAGSHIFT;
+ info->inodeNumber |= vno;
+ info->byteCount = data.nFileSizeLow;
+
+ dirl = dpath[strlen(dpath)-1];
+ if (dirl == NAMEI_SPECDIRC) { /* Special inode. */
+ info->inodeNumber |= NAMEI_INODESPECIAL;
+ info->u.param[0] = data.ftCreationTime.dwHighDateTime;
+ info->u.param[1] = data.ftCreationTime.dwLowDateTime;
+ info->u.param[2] = vno; /* type */
+ info->u.param[3] = volid;
+ if (vno != VI_LINKTABLE)
+ info->linkCount = 1;
+ else {
+ /* Open this handle */
+ char lpath[1024];
+ (void)sprintf(lpath, "%s" OS_DIRSEP "%s", fpath, data.cFileName);
+ linkHandle.fd_fd = OS_OPEN(lpath, O_RDONLY, 0666);
+ info->linkCount =
+ namei_GetLinkCount(&linkHandle, (Inode) 0, 0, 0, 0);
+ }
+ } else {
+ info->linkCount =
+ namei_GetLinkCount(&linkHandle, info->inodeNumber, 0, 0, 0);
+ if (info->linkCount == 0) {
+#ifdef DELETE_ZLC
+ Log("Found 0 link count file %s" OS_DIRSEP "%s, deleting it.\n",
+ fpath, data.cFileName);
+ AddToZLCDeleteList(dirl, data.cFileName);
+#else
+ Log("Found 0 link count file %s" OS_DIRSEP "%s.\n", path,
+ data.cFileName);
+#endif
+ } else {
+ info->u.param[2] = data.ftCreationTime.dwHighDateTime;
+ info->u.param[3] = data.ftCreationTime.dwLowDateTime;
+ info->u.param[1] = vno;
+ info->u.param[0] = volid;
+ }
+ }
+ return 0;
+}
+#else
+static int
+DecodeInode(char *dpath, char *name, struct ViceInodeInfo *info,
+ unsigned int volid)
+{
+ char fpath[512];
+ struct afs_stat_st status;
int parm, tag;
+ lb64_string_t check;
- (void) strcpy(fpath, dpath);
- (void) strcat(fpath, "/");
- (void) strcat(fpath, name);
+ snprintf(fpath, sizeof(fpath), "%s" OS_DIRSEP "%s", dpath, name);
- if (stat(fpath, &status)<0) {
+ if (afs_stat(fpath, &status) < 0) {
return -1;
}
info->byteCount = status.st_size;
- info->inodeNumber = flipbase64_to_int64(name);
-
+ info->inodeNumber = (Inode) flipbase64_to_int64(name);
+
+ int64_to_flipbase64(check, info->inodeNumber);
+ if (strcmp(name, check))
+ return -1;
+
GetOGMFromStat(&status, &parm, &tag);
if ((info->inodeNumber & NAMEI_INODESPECIAL) == NAMEI_INODESPECIAL) {
/* p1 - vid, p2 - -1, p3 - type, p4 - rwvid */
info->u.param[1] = -1;
info->u.param[2] = tag;
info->u.param[3] = volid;
- }
- else {
+ } else {
/* p1 - vid, p2 - vno, p3 - uniq, p4 - dv */
info->u.param[0] = volid;
info->u.param[1] = (int)(info->inodeNumber & NAMEI_VNODEMASK);
info->u.param[2] = (int)((info->inodeNumber >> NAMEI_UNIQSHIFT)
- & (Inode)NAMEI_UNIQMASK);
+ & (Inode) NAMEI_UNIQMASK);
info->u.param[3] = parm;
}
return 0;
}
+#endif
+
+/*
+ * Convert the VolumeInfo file from RO to RW
+ * this routine is called by namei_convertROtoRWvolume()
+ */
+
+#ifdef FSSYNC_BUILD_CLIENT
+static afs_int32
+convertVolumeInfo(FD_t fdr, FD_t fdw, afs_uint32 vid)
+{
+ struct VolumeDiskData vd;
+ char *p;
+
+ if (OS_READ(fdr, &vd, sizeof(struct VolumeDiskData)) !=
+ sizeof(struct VolumeDiskData)) {
+ Log("1 convertVolumeInfo: read failed for %lu with code %d\n",
+ afs_printable_uint32_lu(vid),
+ errno);
+ return -1;
+ }
+ vd.restoredFromId = vd.id; /* remember the RO volume here */
+ vd.cloneId = vd.id;
+ vd.id = vd.parentId;
+ vd.type = RWVOL;
+ vd.dontSalvage = 0;
+ vd.inUse = 0;
+ vd.uniquifier += 5000; /* just in case there are still file copies from
+ * the old RW volume around */
+
+ /* For ROs, the copyDate contains the time that the RO volume was actually
+ * created, and the creationDate just contains the last time the RO was
+ * copied from the RW data. So, make the new RW creationDate more accurate
+ * by setting it to copyDate, if copyDate is older. Since, we know the
+ * volume is at least as old as copyDate. */
+ if (vd.copyDate < vd.creationDate) {
+ vd.creationDate = vd.copyDate;
+ } else {
+ /* If copyDate is newer, just make copyDate and creationDate the same,
+ * for consistency with other RWs */
+ vd.copyDate = vd.creationDate;
+ }
+
+ p = strrchr(vd.name, '.');
+ if (p && !strcmp(p, ".readonly")) {
+ memset(p, 0, 9);
+ }
+ if (OS_WRITE(fdw, &vd, sizeof(struct VolumeDiskData)) !=
+ sizeof(struct VolumeDiskData)) {
+ Log("1 convertVolumeInfo: write failed for %lu with code %d\n",
+ afs_printable_uint32_lu(vid),
+ errno);
+ return -1;
+ }
+ return 0;
+}
+#endif
+
+/*
+ * Convert a RO-volume into a RW-volume
+ *
+ * This function allows to recover very fast from the loss of a partition
+ * from RO-copies if all RO-Copies exist on another partition.
+ * Then these RO-volumes can be made to the new RW-volumes.
+ * Backup of RW-volumes then consists in "vos release".
+ *
+ * We must make sure in this partition exists only the RO-volume which
+ * is typical for remote replicas.
+ *
+ * Then the linktable is already ok,
+ * the vnode files need to be renamed
+ * the volinfo file needs to be replaced by another one with
+ * slightly different contents and new name.
+ * The volume header file of the RO-volume in the /vicep<x> directory
+ * is destroyed by this call. A new header file for the RW-volume must
+ * be created after return from this routine.
+ */
+
+int
+namei_ConvertROtoRWvolume(char *pname, afs_uint32 volumeId)
+{
+ int code = 0;
+#ifdef FSSYNC_BUILD_CLIENT
+ namei_t n;
+ char dir_name[512], oldpath[512], newpath[512];
+ char smallName[64];
+ char largeName[64];
+ char infoName[64];
+ IHandle_t t_ih;
+ IHandle_t *ih;
+ char infoSeen = 0;
+ char smallSeen = 0;
+ char largeSeen = 0;
+ char linkSeen = 0;
+ FD_t fd, fd2;
+ char *p;
+ DIR *dirp;
+ Inode ino;
+ struct dirent *dp;
+ struct DiskPartition64 *partP;
+ struct ViceInodeInfo info;
+ struct VolumeDiskHeader h;
+# ifdef AFS_DEMAND_ATTACH_FS
+ int locktype = 0;
+# endif /* AFS_DEMAND_ATTACH_FS */
+
+ for (partP = DiskPartitionList; partP && strcmp(partP->name, pname);
+ partP = partP->next);
+ if (!partP) {
+ Log("1 namei_ConvertROtoRWvolume: Couldn't find DiskPartition for %s\n", pname);
+ code = EIO;
+ goto done;
+ }
+
+# ifdef AFS_DEMAND_ATTACH_FS
+ locktype = VVolLockType(V_VOLUPD, 1);
+ code = VLockVolumeByIdNB(volumeId, partP, locktype);
+ if (code) {
+ locktype = 0;
+ code = EIO;
+ goto done;
+ }
+# endif /* AFS_DEMAND_ATTACH_FS */
+
+ if (VReadVolumeDiskHeader(volumeId, partP, &h)) {
+ Log("1 namei_ConvertROtoRWvolume: Couldn't read header for RO-volume %lu.\n",
+ afs_printable_uint32_lu(volumeId));
+ code = EIO;
+ goto done;
+ }
+
+ FSYNC_VolOp(volumeId, pname, FSYNC_VOL_BREAKCBKS, 0, NULL);
+ ino = namei_MakeSpecIno(h.parent, VI_LINKTABLE);
+ IH_INIT(ih, partP->device, h.parent, ino);
+
+ namei_HandleToName(&n, ih);
+ strlcpy(dir_name, n.n_path, sizeof(dir_name));
+ p = strrchr(dir_name, OS_DIRSEPC);
+ *p = 0;
+ dirp = opendir(dir_name);
+ if (!dirp) {
+ Log("1 namei_ConvertROtoRWvolume: Could not opendir(%s)\n", dir_name);
+ code = EIO;
+ goto done;
+ }
+
+ while ((dp = readdir(dirp))) {
+ /* struct ViceInodeInfo info; */
+#ifndef AFS_NT40_ENV
+ if (*dp->d_name == '.')
+ continue;
+#endif
+ if (DecodeInode(dir_name, dp->d_name, &info, ih->ih_vid) < 0) {
+ Log("1 namei_ConvertROtoRWvolume: DecodeInode failed for %s" OS_DIRSEP "%s\n",
+ dir_name, dp->d_name);
+ closedir(dirp);
+ code = -1;
+ goto done;
+ }
+ if (info.u.param[1] != -1) {
+ Log("1 namei_ConvertROtoRWvolume: found other than volume special file %s" OS_DIRSEP "%s\n", dir_name, dp->d_name);
+ closedir(dirp);
+ code = -1;
+ goto done;
+ }
+ if (info.u.param[0] != volumeId) {
+ if (info.u.param[0] == ih->ih_vid) {
+ if (info.u.param[2] == VI_LINKTABLE) { /* link table */
+ linkSeen = 1;
+ continue;
+ }
+ }
+ Log("1 namei_ConvertROtoRWvolume: found special file %s" OS_DIRSEP "%s"
+ " for volume %lu\n", dir_name, dp->d_name,
+ afs_printable_uint32_lu(info.u.param[0]));
+ closedir(dirp);
+ code = VVOLEXISTS;
+ goto done;
+ }
+ if (info.u.param[2] == VI_VOLINFO) { /* volume info file */
+ strlcpy(infoName, dp->d_name, sizeof(infoName));
+ infoSeen = 1;
+ } else if (info.u.param[2] == VI_SMALLINDEX) { /* small vnodes file */
+ strlcpy(smallName, dp->d_name, sizeof(smallName));
+ smallSeen = 1;
+ } else if (info.u.param[2] == VI_LARGEINDEX) { /* large vnodes file */
+ strlcpy(largeName, dp->d_name, sizeof(largeName));
+ largeSeen = 1;
+ } else {
+ closedir(dirp);
+ Log("1 namei_ConvertROtoRWvolume: unknown type %d of special file found : %s" OS_DIRSEP "%s\n", info.u.param[2], dir_name, dp->d_name);
+ code = -1;
+ goto done;
+ }
+ }
+ closedir(dirp);
+
+ if (!infoSeen || !smallSeen || !largeSeen || !linkSeen) {
+ Log("1 namei_ConvertROtoRWvolume: not all special files found in %s\n", dir_name);
+ code = -1;
+ goto done;
+ }
+
+ /*
+ * If we come here then there was only a RO-volume and we can safely
+ * proceed.
+ */
+
+ memset(&t_ih, 0, sizeof(t_ih));
+ t_ih.ih_dev = ih->ih_dev;
+ t_ih.ih_vid = ih->ih_vid;
+
+ snprintf(oldpath, sizeof oldpath, "%s" OS_DIRSEP "%s", dir_name,
+ infoName);
+ fd = OS_OPEN(oldpath, O_RDWR, 0);
+ if (fd == INVALID_FD) {
+ Log("1 namei_ConvertROtoRWvolume: could not open RO info file: %s\n",
+ oldpath);
+ code = -1;
+ goto done;
+ }
+ t_ih.ih_ino = namei_MakeSpecIno(ih->ih_vid, VI_VOLINFO);
+ namei_HandleToName(&n, &t_ih);
+ fd2 = OS_OPEN(n.n_path, O_CREAT | O_EXCL | O_RDWR, 0);
+ if (fd2 == INVALID_FD) {
+ Log("1 namei_ConvertROtoRWvolume: could not create RW info file: %s\n", n.n_path);
+ OS_CLOSE(fd);
+ code = -1;
+ goto done;
+ }
+ code = convertVolumeInfo(fd, fd2, ih->ih_vid);
+ OS_CLOSE(fd);
+ if (code) {
+ OS_CLOSE(fd2);
+ OS_UNLINK(n.n_path);
+ code = -1;
+ goto done;
+ }
+ SetOGM(fd2, ih->ih_vid, 1);
+ OS_CLOSE(fd2);
+
+ t_ih.ih_ino = namei_MakeSpecIno(ih->ih_vid, VI_SMALLINDEX);
+ namei_HandleToName(&n, &t_ih);
+ snprintf(newpath, sizeof newpath, "%s" OS_DIRSEP "%s", dir_name,
+ smallName);
+ fd = OS_OPEN(newpath, O_RDWR, 0);
+ if (fd == INVALID_FD) {
+ Log("1 namei_ConvertROtoRWvolume: could not open SmallIndex file: %s\n", newpath);
+ code = -1;
+ goto done;
+ }
+ SetOGM(fd, ih->ih_vid, 2);
+ OS_CLOSE(fd);
+#ifdef AFS_NT40_ENV
+ MoveFileEx(n.n_path, newpath, MOVEFILE_WRITE_THROUGH);
+#else
+ link(newpath, n.n_path);
+ OS_UNLINK(newpath);
+#endif
+
+ t_ih.ih_ino = namei_MakeSpecIno(ih->ih_vid, VI_LARGEINDEX);
+ namei_HandleToName(&n, &t_ih);
+ snprintf(newpath, sizeof newpath, "%s" OS_DIRSEP "%s", dir_name,
+ largeName);
+ fd = OS_OPEN(newpath, O_RDWR, 0);
+ if (fd == INVALID_FD) {
+ Log("1 namei_ConvertROtoRWvolume: could not open LargeIndex file: %s\n", newpath);
+ code = -1;
+ goto done;
+ }
+ SetOGM(fd, ih->ih_vid, 3);
+ OS_CLOSE(fd);
+#ifdef AFS_NT40_ENV
+ MoveFileEx(n.n_path, newpath, MOVEFILE_WRITE_THROUGH);
+#else
+ link(newpath, n.n_path);
+ OS_UNLINK(newpath);
+#endif
+
+ OS_UNLINK(oldpath);
+
+ h.id = h.parent;
+ h.volumeInfo_hi = h.id;
+ h.smallVnodeIndex_hi = h.id;
+ h.largeVnodeIndex_hi = h.id;
+ h.linkTable_hi = h.id;
+
+ if (VCreateVolumeDiskHeader(&h, partP)) {
+ Log("1 namei_ConvertROtoRWvolume: Couldn't write header for RW-volume %lu\n",
+ afs_printable_uint32_lu(h.id));
+ code = EIO;
+ goto done;
+ }
+
+ if (VDestroyVolumeDiskHeader(partP, volumeId, h.parent)) {
+ Log("1 namei_ConvertROtoRWvolume: Couldn't unlink header for RO-volume %lu\n",
+ afs_printable_uint32_lu(volumeId));
+ }
+
+ FSYNC_VolOp(volumeId, pname, FSYNC_VOL_DONE, 0, NULL);
+ FSYNC_VolOp(h.id, pname, FSYNC_VOL_ON, 0, NULL);
+
+ done:
+# ifdef AFS_DEMAND_ATTACH_FS
+ if (locktype) {
+ VUnlockVolumeById(volumeId, partP);
+ }
+# endif /* AFS_DEMAND_ATTACH_FS */
+#endif
+
+ return code;
+}
/* PrintInode
*
* returns a static string used to print either 32 or 64 bit inode numbers.
*/
-char * PrintInode(char *s, Inode ino)
+char *
+PrintInode(char *s, Inode ino)
{
- static afs_ino_str_t result;
+ static afs_ino_str_t result;
if (!s)
s = result;
- (void) sprintf((char*)s, "%Lu", ino);
+ snprintf(s, sizeof(afs_ino_str_t), "%llu", (afs_uintmax_t) ino);
- return (char*)s;
+ return s;
}
static zlcList_t *zlcAnchor = NULL;
static zlcList_t *zlcCur = NULL;
-static void AddToZLCDeleteList(char dir, char *name)
+static void
+AddToZLCDeleteList(char dir, char *name)
{
- assert(strlen(name) <= MAX_ZLC_NAMELEN - 3);
+ osi_Assert(strlen(name) <= MAX_ZLC_NAMELEN - 3);
if (!zlcCur || zlcCur->zlc_n >= MAX_ZLC_NAMES) {
if (zlcCur && zlcCur->zlc_next)
zlcCur = zlcCur->zlc_next;
else {
- zlcList_t *tmp = (zlcList_t*)malloc(sizeof(zlcList_t));
+ zlcList_t *tmp = (zlcList_t *) malloc(sizeof(zlcList_t));
if (!tmp)
return;
if (!zlcAnchor) {
zlcAnchor = tmp;
- }
- else {
+ } else {
zlcCur->zlc_next = tmp;
}
zlcCur = tmp;
}
}
- (void) sprintf(zlcCur->zlc_names[zlcCur->zlc_n], "%c\\%s", dir, name);
- zlcCur->zlc_n ++;
+ if (dir)
+ (void)sprintf(zlcCur->zlc_names[zlcCur->zlc_n], "%c" OS_DIRSEP "%s", dir, name);
+ else
+ (void)sprintf(zlcCur->zlc_names[zlcCur->zlc_n], "%s", name);
+
+ zlcCur->zlc_n++;
}
-static void DeleteZLCFiles(char *path)
+static void
+DeleteZLCFiles(char *path)
{
zlcList_t *z;
int i;
char fname[1024];
for (z = zlcAnchor; z; z = z->zlc_next) {
- for (i=0; i < z->zlc_n; i++) {
- (void) sprintf(fname, "%s\\%s", path, z->zlc_names[i]);
- if (namei_unlink(fname)<0) {
+ for (i = 0; i < z->zlc_n; i++) {
+ if (path)
+ (void)sprintf(fname, "%s" OS_DIRSEP "%s", path, z->zlc_names[i]);
+ else
+ (void)sprintf(fname, "%s", z->zlc_names[i]);
+ if (namei_unlink(fname) < 0) {
Log("ZLC: Can't unlink %s, dos error = %d\n", fname,
- GetLastError());
+ GetLastError());
}
}
- z->zlc_n = 0; /* Can reuse space. */
+ z->zlc_n = 0; /* Can reuse space. */
}
zlcCur = zlcAnchor;
}
-static void FreeZLCList(void)
+static void
+FreeZLCList(void)
{
zlcList_t *tnext;
zlcList_t *i;
#endif
#endif /* AFS_NAMEI_ENV */
-
git://git.openafs.org / openafs.git / blobdiff