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Diffstat (limited to 'fs/nfs/dir.c')
-rw-r--r--fs/nfs/dir.c114
1 files changed, 79 insertions, 35 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index a1554bead692..06c48b385c94 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -34,6 +34,7 @@
#include "nfs4_fs.h"
#include "delegation.h"
+#include "iostat.h"
#define NFS_PARANOIA 1
/* #define NFS_DEBUG_VERBOSE 1 */
@@ -129,6 +130,9 @@ nfs_opendir(struct inode *inode, struct file *filp)
{
int res = 0;
+ dfprintk(VFS, "NFS: opendir(%s/%ld)\n",
+ inode->i_sb->s_id, inode->i_ino);
+
lock_kernel();
/* Call generic open code in order to cache credentials */
if (!res)
@@ -172,7 +176,9 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page *page)
unsigned long timestamp;
int error;
- dfprintk(VFS, "NFS: nfs_readdir_filler() reading cookie %Lu into page %lu.\n", (long long)desc->entry->cookie, page->index);
+ dfprintk(DIRCACHE, "NFS: %s: reading cookie %Lu into page %lu\n",
+ __FUNCTION__, (long long)desc->entry->cookie,
+ page->index);
again:
timestamp = jiffies;
@@ -244,7 +250,8 @@ int find_dirent(nfs_readdir_descriptor_t *desc)
status;
while((status = dir_decode(desc)) == 0) {
- dfprintk(VFS, "NFS: found cookie %Lu\n", (unsigned long long)entry->cookie);
+ dfprintk(DIRCACHE, "NFS: %s: examining cookie %Lu\n",
+ __FUNCTION__, (unsigned long long)entry->cookie);
if (entry->prev_cookie == *desc->dir_cookie)
break;
if (loop_count++ > 200) {
@@ -252,7 +259,6 @@ int find_dirent(nfs_readdir_descriptor_t *desc)
schedule();
}
}
- dfprintk(VFS, "NFS: find_dirent() returns %d\n", status);
return status;
}
@@ -276,7 +282,8 @@ int find_dirent_index(nfs_readdir_descriptor_t *desc)
if (status)
break;
- dfprintk(VFS, "NFS: found cookie %Lu at index %Ld\n", (unsigned long long)entry->cookie, desc->current_index);
+ dfprintk(DIRCACHE, "NFS: found cookie %Lu at index %Ld\n",
+ (unsigned long long)entry->cookie, desc->current_index);
if (desc->file->f_pos == desc->current_index) {
*desc->dir_cookie = entry->cookie;
@@ -288,7 +295,6 @@ int find_dirent_index(nfs_readdir_descriptor_t *desc)
schedule();
}
}
- dfprintk(VFS, "NFS: find_dirent_index() returns %d\n", status);
return status;
}
@@ -303,7 +309,9 @@ int find_dirent_page(nfs_readdir_descriptor_t *desc)
struct page *page;
int status;
- dfprintk(VFS, "NFS: find_dirent_page() searching directory page %ld\n", desc->page_index);
+ dfprintk(DIRCACHE, "NFS: %s: searching page %ld for target %Lu\n",
+ __FUNCTION__, desc->page_index,
+ (long long) *desc->dir_cookie);
page = read_cache_page(inode->i_mapping, desc->page_index,
(filler_t *)nfs_readdir_filler, desc);
@@ -324,7 +332,7 @@ int find_dirent_page(nfs_readdir_descriptor_t *desc)
if (status < 0)
dir_page_release(desc);
out:
- dfprintk(VFS, "NFS: find_dirent_page() returns %d\n", status);
+ dfprintk(DIRCACHE, "NFS: %s: returns %d\n", __FUNCTION__, status);
return status;
read_error:
page_cache_release(page);
@@ -346,13 +354,15 @@ int readdir_search_pagecache(nfs_readdir_descriptor_t *desc)
/* Always search-by-index from the beginning of the cache */
if (*desc->dir_cookie == 0) {
- dfprintk(VFS, "NFS: readdir_search_pagecache() searching for offset %Ld\n", (long long)desc->file->f_pos);
+ dfprintk(DIRCACHE, "NFS: readdir_search_pagecache() searching for offset %Ld\n",
+ (long long)desc->file->f_pos);
desc->page_index = 0;
desc->entry->cookie = desc->entry->prev_cookie = 0;
desc->entry->eof = 0;
desc->current_index = 0;
} else
- dfprintk(VFS, "NFS: readdir_search_pagecache() searching for cookie %Lu\n", (unsigned long long)*desc->dir_cookie);
+ dfprintk(DIRCACHE, "NFS: readdir_search_pagecache() searching for cookie %Lu\n",
+ (unsigned long long)*desc->dir_cookie);
for (;;) {
res = find_dirent_page(desc);
@@ -365,7 +375,8 @@ int readdir_search_pagecache(nfs_readdir_descriptor_t *desc)
schedule();
}
}
- dfprintk(VFS, "NFS: readdir_search_pagecache() returned %d\n", res);
+
+ dfprintk(DIRCACHE, "NFS: %s: returns %d\n", __FUNCTION__, res);
return res;
}
@@ -390,7 +401,8 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
int loop_count = 0,
res;
- dfprintk(VFS, "NFS: nfs_do_filldir() filling starting @ cookie %Lu\n", (long long)entry->cookie);
+ dfprintk(DIRCACHE, "NFS: nfs_do_filldir() filling starting @ cookie %Lu\n",
+ (unsigned long long)entry->cookie);
for(;;) {
unsigned d_type = DT_UNKNOWN;
@@ -427,7 +439,8 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
dir_page_release(desc);
if (dentry != NULL)
dput(dentry);
- dfprintk(VFS, "NFS: nfs_do_filldir() filling ended @ cookie %Lu; returning = %d\n", (unsigned long long)*desc->dir_cookie, res);
+ dfprintk(DIRCACHE, "NFS: nfs_do_filldir() filling ended @ cookie %Lu; returning = %d\n",
+ (unsigned long long)*desc->dir_cookie, res);
return res;
}
@@ -453,7 +466,8 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent,
struct page *page = NULL;
int status;
- dfprintk(VFS, "NFS: uncached_readdir() searching for cookie %Lu\n", (unsigned long long)*desc->dir_cookie);
+ dfprintk(DIRCACHE, "NFS: uncached_readdir() searching for cookie %Lu\n",
+ (unsigned long long)*desc->dir_cookie);
page = alloc_page(GFP_HIGHUSER);
if (!page) {
@@ -485,7 +499,8 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent,
desc->entry->cookie = desc->entry->prev_cookie = 0;
desc->entry->eof = 0;
out:
- dfprintk(VFS, "NFS: uncached_readdir() returns %d\n", status);
+ dfprintk(DIRCACHE, "NFS: %s: returns %d\n",
+ __FUNCTION__, status);
return status;
out_release:
dir_page_release(desc);
@@ -507,6 +522,11 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
struct nfs_fattr fattr;
long res;
+ dfprintk(VFS, "NFS: readdir(%s/%s) starting at cookie %Lu\n",
+ dentry->d_parent->d_name.name, dentry->d_name.name,
+ (long long)filp->f_pos);
+ nfs_inc_stats(inode, NFSIOS_VFSGETDENTS);
+
lock_kernel();
res = nfs_revalidate_inode(NFS_SERVER(inode), inode);
@@ -566,9 +586,12 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
}
}
unlock_kernel();
- if (res < 0)
- return res;
- return 0;
+ if (res > 0)
+ res = 0;
+ dfprintk(VFS, "NFS: readdir(%s/%s) returns %ld\n",
+ dentry->d_parent->d_name.name, dentry->d_name.name,
+ res);
+ return res;
}
loff_t nfs_llseek_dir(struct file *filp, loff_t offset, int origin)
@@ -599,6 +622,10 @@ out:
*/
int nfs_fsync_dir(struct file *filp, struct dentry *dentry, int datasync)
{
+ dfprintk(VFS, "NFS: fsync_dir(%s/%s) datasync %d\n",
+ dentry->d_parent->d_name.name, dentry->d_name.name,
+ datasync);
+
return 0;
}
@@ -713,6 +740,7 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd)
parent = dget_parent(dentry);
lock_kernel();
dir = parent->d_inode;
+ nfs_inc_stats(dir, NFSIOS_DENTRYREVALIDATE);
inode = dentry->d_inode;
if (!inode) {
@@ -722,8 +750,9 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd)
}
if (is_bad_inode(inode)) {
- dfprintk(VFS, "nfs_lookup_validate: %s/%s has dud inode\n",
- dentry->d_parent->d_name.name, dentry->d_name.name);
+ dfprintk(LOOKUPCACHE, "%s: %s/%s has dud inode\n",
+ __FUNCTION__, dentry->d_parent->d_name.name,
+ dentry->d_name.name);
goto out_bad;
}
@@ -755,6 +784,9 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd)
out_valid:
unlock_kernel();
dput(parent);
+ dfprintk(LOOKUPCACHE, "NFS: %s(%s/%s) is valid\n",
+ __FUNCTION__, dentry->d_parent->d_name.name,
+ dentry->d_name.name);
return 1;
out_zap_parent:
nfs_zap_caches(dir);
@@ -771,6 +803,9 @@ out_zap_parent:
d_drop(dentry);
unlock_kernel();
dput(parent);
+ dfprintk(LOOKUPCACHE, "NFS: %s(%s/%s) is invalid\n",
+ __FUNCTION__, dentry->d_parent->d_name.name,
+ dentry->d_name.name);
return 0;
}
@@ -844,6 +879,7 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
dfprintk(VFS, "NFS: lookup(%s/%s)\n",
dentry->d_parent->d_name.name, dentry->d_name.name);
+ nfs_inc_stats(dir, NFSIOS_VFSLOOKUP);
res = ERR_PTR(-ENAMETOOLONG);
if (dentry->d_name.len > NFS_SERVER(dir)->namelen)
@@ -865,9 +901,9 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
res = ERR_PTR(error);
goto out_unlock;
}
- res = ERR_PTR(-EACCES);
inode = nfs_fhget(dentry->d_sb, &fhandle, &fattr);
- if (!inode)
+ res = (struct dentry *)inode;
+ if (IS_ERR(res))
goto out_unlock;
no_entry:
res = d_add_unique(dentry, inode);
@@ -912,6 +948,9 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
struct dentry *res = NULL;
int error;
+ dfprintk(VFS, "NFS: atomic_lookup(%s/%ld), %s\n",
+ dir->i_sb->s_id, dir->i_ino, dentry->d_name.name);
+
/* Check that we are indeed trying to open this file */
if (!is_atomic_open(dir, nd))
goto no_open;
@@ -1057,7 +1096,7 @@ static struct dentry *nfs_readdir_lookup(nfs_readdir_descriptor_t *desc)
return NULL;
dentry->d_op = NFS_PROTO(dir)->dentry_ops;
inode = nfs_fhget(dentry->d_sb, entry->fh, entry->fattr);
- if (!inode) {
+ if (IS_ERR(inode)) {
dput(dentry);
return NULL;
}
@@ -1095,9 +1134,9 @@ int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fhandle,
if (error < 0)
goto out_err;
}
- error = -ENOMEM;
inode = nfs_fhget(dentry->d_sb, fhandle, fattr);
- if (inode == NULL)
+ error = PTR_ERR(inode);
+ if (IS_ERR(inode))
goto out_err;
d_instantiate(dentry, inode);
return 0;
@@ -1119,8 +1158,8 @@ static int nfs_create(struct inode *dir, struct dentry *dentry, int mode,
int error;
int open_flags = 0;
- dfprintk(VFS, "NFS: create(%s/%ld, %s\n", dir->i_sb->s_id,
- dir->i_ino, dentry->d_name.name);
+ dfprintk(VFS, "NFS: create(%s/%ld), %s\n",
+ dir->i_sb->s_id, dir->i_ino, dentry->d_name.name);
attr.ia_mode = mode;
attr.ia_valid = ATTR_MODE;
@@ -1153,8 +1192,8 @@ nfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
struct iattr attr;
int status;
- dfprintk(VFS, "NFS: mknod(%s/%ld, %s\n", dir->i_sb->s_id,
- dir->i_ino, dentry->d_name.name);
+ dfprintk(VFS, "NFS: mknod(%s/%ld), %s\n",
+ dir->i_sb->s_id, dir->i_ino, dentry->d_name.name);
if (!new_valid_dev(rdev))
return -EINVAL;
@@ -1186,8 +1225,8 @@ static int nfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
struct iattr attr;
int error;
- dfprintk(VFS, "NFS: mkdir(%s/%ld, %s\n", dir->i_sb->s_id,
- dir->i_ino, dentry->d_name.name);
+ dfprintk(VFS, "NFS: mkdir(%s/%ld), %s\n",
+ dir->i_sb->s_id, dir->i_ino, dentry->d_name.name);
attr.ia_valid = ATTR_MODE;
attr.ia_mode = mode | S_IFDIR;
@@ -1212,8 +1251,8 @@ static int nfs_rmdir(struct inode *dir, struct dentry *dentry)
{
int error;
- dfprintk(VFS, "NFS: rmdir(%s/%ld, %s\n", dir->i_sb->s_id,
- dir->i_ino, dentry->d_name.name);
+ dfprintk(VFS, "NFS: rmdir(%s/%ld), %s\n",
+ dir->i_sb->s_id, dir->i_ino, dentry->d_name.name);
lock_kernel();
nfs_begin_data_update(dir);
@@ -1241,6 +1280,7 @@ static int nfs_sillyrename(struct inode *dir, struct dentry *dentry)
dfprintk(VFS, "NFS: silly-rename(%s/%s, ct=%d)\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
atomic_read(&dentry->d_count));
+ nfs_inc_stats(dir, NFSIOS_SILLYRENAME);
#ifdef NFS_PARANOIA
if (!dentry->d_inode)
@@ -1268,8 +1308,8 @@ dentry->d_parent->d_name.name, dentry->d_name.name);
sillycounter++;
sprintf(suffix, "%*.*x", countersize, countersize, sillycounter);
- dfprintk(VFS, "trying to rename %s to %s\n",
- dentry->d_name.name, silly);
+ dfprintk(VFS, "NFS: trying to rename %s to %s\n",
+ dentry->d_name.name, silly);
sdentry = lookup_one_len(silly, dentry->d_parent, slen);
/*
@@ -1640,6 +1680,8 @@ int nfs_permission(struct inode *inode, int mask, struct nameidata *nd)
struct rpc_cred *cred;
int res = 0;
+ nfs_inc_stats(inode, NFSIOS_VFSACCESS);
+
if (mask == 0)
goto out;
/* Is this sys_access() ? */
@@ -1679,13 +1721,15 @@ force_lookup:
res = PTR_ERR(cred);
unlock_kernel();
out:
+ dfprintk(VFS, "NFS: permission(%s/%ld), mask=0x%x, res=%d\n",
+ inode->i_sb->s_id, inode->i_ino, mask, res);
return res;
out_notsup:
res = nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (res == 0)
res = generic_permission(inode, mask, NULL);
unlock_kernel();
- return res;
+ goto out;
}
/*
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.