#include <afsconfig.h>
#include "afs/param.h"
-RCSID("$Header$");
+RCSID
+ ("$Header$");
+#ifdef AFS_LINUX24_ENV
+#include "h/module.h" /* early to avoid printf->printk mapping */
+#endif
#include "afs/sysincludes.h" /* Standard vendor system headers */
#include "afsincludes.h" /* Afs-based standard headers */
-#include "afs/afs_stats.h" /* afs statistics */
+#include "afs/afs_stats.h" /* afs statistics */
#include "h/smp_lock.h"
+#if defined(AFS_LINUX26_ENV)
+#include "h/namei.h"
+#endif
-int afs_osicred_initialized=0;
-struct AFS_UCRED afs_osi_cred;
afs_lock_t afs_xosi; /* lock is for tvattr */
extern struct osi_dev cacheDev;
+#if defined(AFS_LINUX24_ENV)
+extern struct vfsmount *afs_cacheMnt;
+#endif
extern struct super_block *afs_cacheSBp;
-void *osi_UFSOpen(afs_int32 ainode)
+#if defined(AFS_LINUX26_ENV)
+void *
+osi_UFSOpen(afs_int32 ainode)
+{
+ register struct osi_file *afile = NULL;
+ extern int cacheDiskType;
+ struct inode *tip = NULL;
+ struct dentry *dp = NULL;
+ struct file *filp = NULL;
+ AFS_STATCNT(osi_UFSOpen);
+ if (cacheDiskType != AFS_FCACHE_TYPE_UFS) {
+ osi_Panic("UFSOpen called for non-UFS cache\n");
+ }
+ if (!afs_osicred_initialized) {
+ /* valid for alpha_osf, SunOS, Ultrix */
+ memset((char *)&afs_osi_cred, 0, sizeof(struct AFS_UCRED));
+ crhold(&afs_osi_cred); /* don't let it evaporate, since it is static */
+ afs_osicred_initialized = 1;
+ }
+ afile = (struct osi_file *)osi_AllocLargeSpace(sizeof(struct osi_file));
+ AFS_GUNLOCK();
+ if (!afile) {
+ osi_Panic("osi_UFSOpen: Failed to allocate %d bytes for osi_file.\n",
+ sizeof(struct osi_file));
+ }
+ memset(afile, 0, sizeof(struct osi_file));
+ tip = iget(afs_cacheSBp, (u_long) ainode);
+ if (!tip)
+ osi_Panic("Can't get inode %d\n", ainode);
+ tip->i_flags |= MS_NOATIME; /* Disable updating access times. */
+
+ dp = d_alloc_anon(tip);
+ if (!dp)
+ osi_Panic("Can't get dentry for inode %d\n", ainode);
+
+ filp = dentry_open(dp, mntget(afs_cacheMnt), O_RDWR);
+ if (IS_ERR(filp))
+ osi_Panic("Can't open inode %d\n", ainode);
+ afile->filp = filp;
+ afile->size = FILE_INODE(filp)->i_size;
+ AFS_GLOCK();
+ afile->offset = 0;
+ afile->proc = (int (*)())0;
+ afile->inum = ainode; /* for hint validity checking */
+ return (void *)afile;
+}
+#else
+void *
+osi_UFSOpen(afs_int32 ainode)
{
- struct inode *ip;
register struct osi_file *afile = NULL;
extern int cacheDiskType;
afs_int32 code = 0;
- int dummy;
struct inode *tip = NULL;
struct file *filp = NULL;
AFS_STATCNT(osi_UFSOpen);
- if(cacheDiskType != AFS_FCACHE_TYPE_UFS) {
+ if (cacheDiskType != AFS_FCACHE_TYPE_UFS) {
osi_Panic("UFSOpen called for non-UFS cache\n");
}
if (!afs_osicred_initialized) {
crhold(&afs_osi_cred); /* don't let it evaporate, since it is static */
afs_osicred_initialized = 1;
}
- afile = (struct osi_file *) osi_AllocSmallSpace(sizeof(struct osi_file));
+ afile = (struct osi_file *)osi_AllocLargeSpace(sizeof(struct osi_file));
AFS_GUNLOCK();
if (!afile) {
osi_Panic("osi_UFSOpen: Failed to allocate %d bytes for osi_file.\n",
- sizeof(struct osi_file));
+ sizeof(struct osi_file));
}
memset(afile, 0, sizeof(struct osi_file));
filp = &afile->file;
filp->f_dentry = &afile->dentry;
- tip = iget(afs_cacheSBp, (u_long)ainode);
+ tip = iget(afs_cacheSBp, (u_long) ainode);
if (!tip)
osi_Panic("Can't get inode %d\n", ainode);
FILE_INODE(filp) = tip;
- tip->i_flags |= MS_NOATIME; /* Disable updating access times. */
+ tip->i_flags |= MS_NOATIME; /* Disable updating access times. */
filp->f_flags = O_RDWR;
#if defined(AFS_LINUX24_ENV)
+ filp->f_mode = FMODE_READ|FMODE_WRITE;
filp->f_op = fops_get(tip->i_fop);
#else
filp->f_op = tip->i_op->default_file_ops;
afile->size = tip->i_size;
AFS_GLOCK();
afile->offset = 0;
- afile->proc = (int (*)()) 0;
- afile->inum = ainode; /* for hint validity checking */
+ afile->proc = (int (*)())0;
+ afile->inum = ainode; /* for hint validity checking */
return (void *)afile;
}
+#endif
-int afs_osi_Stat(register struct osi_file *afile, register struct osi_stat *astat)
+int
+afs_osi_Stat(register struct osi_file *afile, register struct osi_stat *astat)
{
register afs_int32 code;
AFS_STATCNT(osi_Stat);
- MObtainWriteLock(&afs_xosi,320);
- astat->size = FILE_INODE(&afile->file)->i_size;
- astat->blksize = FILE_INODE(&afile->file)->i_blksize;
- astat->mtime = FILE_INODE(&afile->file)->i_mtime;
- astat->atime = FILE_INODE(&afile->file)->i_atime;
+ MObtainWriteLock(&afs_xosi, 320);
+ astat->size = OSIFILE_INODE(afile)->i_size;
+#ifdef STRUCT_INODE_HAS_I_BLKSIZE
+ astat->blksize = OSIFILE_INODE(afile)->i_blksize;
+#endif
+#if defined(AFS_LINUX26_ENV)
+ astat->mtime = OSIFILE_INODE(afile)->i_mtime.tv_sec;
+ astat->atime = OSIFILE_INODE(afile)->i_atime.tv_sec;
+#else
+ astat->mtime = OSIFILE_INODE(afile)->i_mtime;
+ astat->atime = OSIFILE_INODE(afile)->i_atime;
+#endif
code = 0;
MReleaseWriteLock(&afs_xosi);
return code;
}
-int osi_UFSClose(register struct osi_file *afile)
- {
- AFS_STATCNT(osi_Close);
- if (afile) {
- if (FILE_INODE(&afile->file)) {
- struct file *filp = &afile->file;
- if (filp->f_op && filp->f_op->release)
- filp->f_op->release(FILE_INODE(filp), filp);
- iput(FILE_INODE(filp));
- }
- }
-
- osi_FreeSmallSpace(afile);
- return 0;
- }
-
-int osi_UFSTruncate(register struct osi_file *afile, afs_int32 asize)
+#ifdef AFS_LINUX26_ENV
+int
+osi_UFSClose(register struct osi_file *afile)
+{
+ AFS_STATCNT(osi_Close);
+ if (afile) {
+ if (OSIFILE_INODE(afile)) {
+ filp_close(afile->filp, NULL);
+ }
+ }
+
+ osi_FreeLargeSpace(afile);
+ return 0;
+}
+#else
+int
+osi_UFSClose(register struct osi_file *afile)
+{
+ AFS_STATCNT(osi_Close);
+ if (afile) {
+ if (FILE_INODE(&afile->file)) {
+ struct file *filp = &afile->file;
+ if (filp->f_op && filp->f_op->release)
+ filp->f_op->release(FILE_INODE(filp), filp);
+ iput(FILE_INODE(filp));
+ }
+ }
+
+ osi_FreeLargeSpace(afile);
+ return 0;
+}
+#endif
+
+int
+osi_UFSTruncate(register struct osi_file *afile, afs_int32 asize)
{
- struct AFS_UCRED *oldCred;
register afs_int32 code;
struct osi_stat tstat;
struct iattr newattrs;
- struct inode *inode = FILE_INODE(&afile->file);
+ struct inode *inode = OSIFILE_INODE(afile);
AFS_STATCNT(osi_Truncate);
/* This routine only shrinks files, and most systems
* small enough. Check now and save some time.
*/
code = afs_osi_Stat(afile, &tstat);
- if (code || tstat.size <= asize) return code;
- MObtainWriteLock(&afs_xosi,321);
+ if (code || tstat.size <= asize)
+ return code;
+ MObtainWriteLock(&afs_xosi, 321);
AFS_GUNLOCK();
#ifdef STRUCT_INODE_HAS_I_ALLOC_SEM
down_write(&inode->i_alloc_sem);
#endif
+#ifdef STRUCT_INODE_HAS_I_MUTEX
+ mutex_lock(&inode->i_mutex);
+#else
down(&inode->i_sem);
- inode->i_size = newattrs.ia_size = asize;
+#endif
+ newattrs.ia_size = asize;
newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
#if defined(AFS_LINUX24_ENV)
newattrs.ia_ctime = CURRENT_TIME;
if (!code)
truncate_inode_pages(&inode->i_data, asize);
#else
+ inode->i_size = asize;
if (inode->i_sb->s_op && inode->i_sb->s_op->notify_change) {
code = inode->i_sb->s_op->notify_change(&afile->dentry, &newattrs);
}
}
#endif
code = -code;
+#ifdef STRUCT_INODE_HAS_I_MUTEX
+ mutex_unlock(&inode->i_mutex);
+#else
up(&inode->i_sem);
+#endif
#ifdef STRUCT_INODE_HAS_I_ALLOC_SEM
up_write(&inode->i_alloc_sem);
#endif
/* Generic read interface */
-int afs_osi_Read(register struct osi_file *afile, int offset, void *aptr, afs_int32 asize)
+int
+afs_osi_Read(register struct osi_file *afile, int offset, void *aptr,
+ afs_int32 asize)
{
- struct AFS_UCRED *oldCred;
- size_t resid;
- register afs_int32 code;
- register afs_int32 cnt1=0;
+ struct uio auio;
+ struct iovec iov;
+ afs_int32 code;
+
AFS_STATCNT(osi_Read);
- /**
- * If the osi_file passed in is NULL, panic only if AFS is not shutting
- * down. No point in crashing when we are already shutting down
- */
- if ( !afile ) {
- if ( !afs_shuttingdown )
+ /*
+ * If the osi_file passed in is NULL, panic only if AFS is not shutting
+ * down. No point in crashing when we are already shutting down
+ */
+ if (!afile) {
+ if (!afs_shuttingdown)
osi_Panic("osi_Read called with null param");
else
return EIO;
}
- if (offset != -1) afile->offset = offset;
+ if (offset != -1)
+ afile->offset = offset;
+ setup_uio(&auio, &iov, aptr, afile->offset, asize, UIO_READ, AFS_UIOSYS);
AFS_GUNLOCK();
- code = osi_rdwr(UIO_READ, afile, (caddr_t) aptr, asize, &resid);
+ code = osi_rdwr(afile, &auio, UIO_READ);
AFS_GLOCK();
if (code == 0) {
- code = asize - resid;
+ code = asize - auio.uio_resid;
afile->offset += code;
- }
- else {
- afs_Trace2(afs_iclSetp, CM_TRACE_READFAILED, ICL_TYPE_INT32, resid,
- ICL_TYPE_INT32, code);
+ } else {
+ afs_Trace2(afs_iclSetp, CM_TRACE_READFAILED, ICL_TYPE_INT32, auio.uio_resid,
+ ICL_TYPE_INT32, code);
code = -1;
}
return code;
}
/* Generic write interface */
-int afs_osi_Write(register struct osi_file *afile, afs_int32 offset, void *aptr, afs_int32 asize)
+int
+afs_osi_Write(register struct osi_file *afile, afs_int32 offset, void *aptr,
+ afs_int32 asize)
{
- struct AFS_UCRED *oldCred;
- size_t resid;
- register afs_int32 code;
+ struct uio auio;
+ struct iovec iov;
+ afs_int32 code;
+
AFS_STATCNT(osi_Write);
- if ( !afile ) {
- if ( !afs_shuttingdown )
+
+ if (!afile) {
+ if (!afs_shuttingdown)
osi_Panic("afs_osi_Write called with null param");
else
return EIO;
- }
- if (offset != -1) afile->offset = offset;
+ }
+
+ if (offset != -1)
+ afile->offset = offset;
+ setup_uio(&auio, &iov, aptr, afile->offset, asize, UIO_WRITE, AFS_UIOSYS);
AFS_GUNLOCK();
- code = osi_rdwr(UIO_WRITE, afile, (caddr_t)aptr, asize, &resid);
+ code = osi_rdwr(afile, &auio, UIO_WRITE);
AFS_GLOCK();
if (code == 0) {
- code = asize - resid;
+ code = asize - auio.uio_resid;
afile->offset += code;
- }
- else {
- if (code == ENOSPC) afs_warnuser("\n\n\n*** Cache partition is FULL - Decrease cachesize!!! ***\n\n");
+ } else {
+ if (code == ENOSPC)
+ afs_warnuser
+ ("\n\n\n*** Cache partition is FULL - Decrease cachesize!!! ***\n\n");
code = -1;
}
- if (afile->proc) {
+
+ if (afile->proc)
(*afile->proc)(afile, code);
- }
+
return code;
}
/* This work should be handled by physstrat in ca/machdep.c.
This routine written from the RT NFS port strategy routine.
It has been generalized a bit, but should still be pretty clear. */
-int afs_osi_MapStrategy(int (*aproc)(struct buf *bp), register struct buf *bp)
+int
+afs_osi_MapStrategy(int (*aproc) (struct buf * bp), register struct buf *bp)
{
afs_int32 returnCode;
return returnCode;
}
-void shutdown_osifile(void)
+void
+shutdown_osifile(void)
+{
+ extern int afs_cold_shutdown;
+
+ AFS_STATCNT(shutdown_osifile);
+ if (afs_cold_shutdown) {
+ afs_osicred_initialized = 0;
+ }
+}
+
+/* Intialize cache device info and fragment size for disk cache partition. */
+int
+osi_InitCacheInfo(char *aname)
+{
+ int code;
+ struct dentry *dp;
+ extern ino_t cacheInode;
+ extern struct osi_dev cacheDev;
+ extern afs_int32 afs_fsfragsize;
+ extern struct super_block *afs_cacheSBp;
+ extern struct vfsmount *afs_cacheMnt;
+ code = osi_lookupname_internal(aname, 1, &afs_cacheMnt, &dp);
+ if (code)
+ return ENOENT;
+
+ cacheInode = dp->d_inode->i_ino;
+ cacheDev.dev = dp->d_inode->i_sb->s_dev;
+ afs_fsfragsize = dp->d_inode->i_sb->s_blocksize - 1;
+ afs_cacheSBp = dp->d_inode->i_sb;
+
+ dput(dp);
+
+ return 0;
+}
+
+
+#define FOP_READ(F, B, C) (F)->f_op->read(F, B, (size_t)(C), &(F)->f_pos)
+#define FOP_WRITE(F, B, C) (F)->f_op->write(F, B, (size_t)(C), &(F)->f_pos)
+
+/* osi_rdwr
+ * seek, then read or write to an open inode. addrp points to data in
+ * kernel space.
+ */
+int
+osi_rdwr(struct osi_file *osifile, uio_t * uiop, int rw)
{
- extern int afs_cold_shutdown;
+#ifdef AFS_LINUX26_ENV
+ struct file *filp = osifile->filp;
+#else
+ struct file *filp = &osifile->file;
+#endif
+ KERNEL_SPACE_DECL;
+ int code = 0;
+ struct iovec *iov;
+ afs_size_t count;
+ unsigned long savelim;
- AFS_STATCNT(shutdown_osifile);
- if (afs_cold_shutdown) {
- afs_osicred_initialized = 0;
- }
+ savelim = current->TASK_STRUCT_RLIM[RLIMIT_FSIZE].rlim_cur;
+ current->TASK_STRUCT_RLIM[RLIMIT_FSIZE].rlim_cur = RLIM_INFINITY;
+
+ if (uiop->uio_seg == AFS_UIOSYS)
+ TO_USER_SPACE();
+
+ /* seek to the desired position. Return -1 on error. */
+ if (filp->f_op->llseek) {
+ if (filp->f_op->llseek(filp, (loff_t) uiop->uio_offset, 0) != uiop->uio_offset)
+ return -1;
+ } else
+ filp->f_pos = uiop->uio_offset;
+
+ while (code == 0 && uiop->uio_resid > 0 && uiop->uio_iovcnt > 0) {
+ iov = uiop->uio_iov;
+ count = iov->iov_len;
+ if (count == 0) {
+ uiop->uio_iov++;
+ uiop->uio_iovcnt--;
+ continue;
+ }
+
+ if (rw == UIO_READ)
+ code = FOP_READ(filp, iov->iov_base, count);
+ else
+ code = FOP_WRITE(filp, iov->iov_base, count);
+
+ if (code < 0) {
+ code = -code;
+ break;
+ } else if (code == 0) {
+ /*
+ * This is bad -- we can't read any more data from the
+ * file, but we have no good way of signaling a partial
+ * read either.
+ */
+ code = EIO;
+ break;
+ }
+
+ iov->iov_base += code;
+ iov->iov_len -= code;
+ uiop->uio_resid -= code;
+ uiop->uio_offset += code;
+ code = 0;
+ }
+
+ if (uiop->uio_seg == AFS_UIOSYS)
+ TO_KERNEL_SPACE();
+
+ current->TASK_STRUCT_RLIM[RLIMIT_FSIZE].rlim_cur = savelim;
+
+ return code;
+}
+
+/* setup_uio
+ * Setup a uio struct.
+ */
+void
+setup_uio(uio_t * uiop, struct iovec *iovecp, const char *buf, afs_offs_t pos,
+ int count, uio_flag_t flag, uio_seg_t seg)
+{
+ iovecp->iov_base = (char *)buf;
+ iovecp->iov_len = count;
+ uiop->uio_iov = iovecp;
+ uiop->uio_iovcnt = 1;
+ uiop->uio_offset = pos;
+ uiop->uio_seg = seg;
+ uiop->uio_resid = count;
+ uiop->uio_flag = flag;
+}
+
+
+/* uiomove
+ * UIO_READ : dp -> uio
+ * UIO_WRITE : uio -> dp
+ */
+int
+uiomove(char *dp, int length, uio_flag_t rw, uio_t * uiop)
+{
+ int count;
+ struct iovec *iov;
+ int code;
+
+ while (length > 0 && uiop->uio_resid > 0 && uiop->uio_iovcnt > 0) {
+ iov = uiop->uio_iov;
+ count = iov->iov_len;
+
+ if (!count) {
+ uiop->uio_iov++;
+ uiop->uio_iovcnt--;
+ continue;
+ }
+
+ if (count > length)
+ count = length;
+
+ switch (uiop->uio_seg) {
+ case AFS_UIOSYS:
+ switch (rw) {
+ case UIO_READ:
+ memcpy(iov->iov_base, dp, count);
+ break;
+ case UIO_WRITE:
+ memcpy(dp, iov->iov_base, count);
+ break;
+ default:
+ printf("uiomove: Bad rw = %d\n", rw);
+ return -EINVAL;
+ }
+ break;
+ case AFS_UIOUSER:
+ switch (rw) {
+ case UIO_READ:
+ AFS_COPYOUT(dp, iov->iov_base, count, code);
+ break;
+ case UIO_WRITE:
+ AFS_COPYIN(iov->iov_base, dp, count, code);
+ break;
+ default:
+ printf("uiomove: Bad rw = %d\n", rw);
+ return -EINVAL;
+ }
+ break;
+ default:
+ printf("uiomove: Bad seg = %d\n", uiop->uio_seg);
+ return -EINVAL;
+ }
+
+ dp += count;
+ length -= count;
+ iov->iov_base += count;
+ iov->iov_len -= count;
+ uiop->uio_offset += count;
+ uiop->uio_resid -= count;
+ }
+ return 0;
}
git://git.openafs.org / openafs.git / blobdiff