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Diffstat (limited to 'fs/cifs/cifsacl.c')
-rw-r--r--fs/cifs/cifsacl.c123
1 files changed, 74 insertions, 49 deletions
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 7dfe0842a6f..c9b4792ae82 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -22,6 +22,7 @@
*/
#include <linux/fs.h>
+#include <linux/slab.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsacl.h"
@@ -86,11 +87,11 @@ int match_sid(struct cifs_sid *ctsid)
continue; /* all sub_auth values do not match */
}
- cFYI(1, ("matching sid: %s\n", wksidarr[i].sidname));
+ cFYI(1, "matching sid: %s\n", wksidarr[i].sidname);
return 0; /* sids compare/match */
}
- cFYI(1, ("No matching sid"));
+ cFYI(1, "No matching sid");
return -1;
}
@@ -207,14 +208,14 @@ static void access_flags_to_mode(__le32 ace_flags, int type, umode_t *pmode,
*pbits_to_set &= ~S_IXUGO;
return;
} else if (type != ACCESS_ALLOWED) {
- cERROR(1, ("unknown access control type %d", type));
+ cERROR(1, "unknown access control type %d", type);
return;
}
/* else ACCESS_ALLOWED type */
if (flags & GENERIC_ALL) {
*pmode |= (S_IRWXUGO & (*pbits_to_set));
- cFYI(DBG2, ("all perms"));
+ cFYI(DBG2, "all perms");
return;
}
if ((flags & GENERIC_WRITE) ||
@@ -227,7 +228,7 @@ static void access_flags_to_mode(__le32 ace_flags, int type, umode_t *pmode,
((flags & FILE_EXEC_RIGHTS) == FILE_EXEC_RIGHTS))
*pmode |= (S_IXUGO & (*pbits_to_set));
- cFYI(DBG2, ("access flags 0x%x mode now 0x%x", flags, *pmode));
+ cFYI(DBG2, "access flags 0x%x mode now 0x%x", flags, *pmode);
return;
}
@@ -256,7 +257,7 @@ static void mode_to_access_flags(umode_t mode, umode_t bits_to_use,
if (mode & S_IXUGO)
*pace_flags |= SET_FILE_EXEC_RIGHTS;
- cFYI(DBG2, ("mode: 0x%x, access flags now 0x%x", mode, *pace_flags));
+ cFYI(DBG2, "mode: 0x%x, access flags now 0x%x", mode, *pace_flags);
return;
}
@@ -296,24 +297,24 @@ static void dump_ace(struct cifs_ace *pace, char *end_of_acl)
/* validate that we do not go past end of acl */
if (le16_to_cpu(pace->size) < 16) {
- cERROR(1, ("ACE too small, %d", le16_to_cpu(pace->size)));
+ cERROR(1, "ACE too small %d", le16_to_cpu(pace->size));
return;
}
if (end_of_acl < (char *)pace + le16_to_cpu(pace->size)) {
- cERROR(1, ("ACL too small to parse ACE"));
+ cERROR(1, "ACL too small to parse ACE");
return;
}
num_subauth = pace->sid.num_subauth;
if (num_subauth) {
int i;
- cFYI(1, ("ACE revision %d num_auth %d type %d flags %d size %d",
+ cFYI(1, "ACE revision %d num_auth %d type %d flags %d size %d",
pace->sid.revision, pace->sid.num_subauth, pace->type,
- pace->flags, le16_to_cpu(pace->size)));
+ pace->flags, le16_to_cpu(pace->size));
for (i = 0; i < num_subauth; ++i) {
- cFYI(1, ("ACE sub_auth[%d]: 0x%x", i,
- le32_to_cpu(pace->sid.sub_auth[i])));
+ cFYI(1, "ACE sub_auth[%d]: 0x%x", i,
+ le32_to_cpu(pace->sid.sub_auth[i]));
}
/* BB add length check to make sure that we do not have huge
@@ -346,13 +347,13 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl,
/* validate that we do not go past end of acl */
if (end_of_acl < (char *)pdacl + le16_to_cpu(pdacl->size)) {
- cERROR(1, ("ACL too small to parse DACL"));
+ cERROR(1, "ACL too small to parse DACL");
return;
}
- cFYI(DBG2, ("DACL revision %d size %d num aces %d",
+ cFYI(DBG2, "DACL revision %d size %d num aces %d",
le16_to_cpu(pdacl->revision), le16_to_cpu(pdacl->size),
- le32_to_cpu(pdacl->num_aces)));
+ le32_to_cpu(pdacl->num_aces));
/* reset rwx permissions for user/group/other.
Also, if num_aces is 0 i.e. DACL has no ACEs,
@@ -436,25 +437,25 @@ static int parse_sid(struct cifs_sid *psid, char *end_of_acl)
/* validate that we do not go past end of ACL - sid must be at least 8
bytes long (assuming no sub-auths - e.g. the null SID */
if (end_of_acl < (char *)psid + 8) {
- cERROR(1, ("ACL too small to parse SID %p", psid));
+ cERROR(1, "ACL too small to parse SID %p", psid);
return -EINVAL;
}
if (psid->num_subauth) {
#ifdef CONFIG_CIFS_DEBUG2
int i;
- cFYI(1, ("SID revision %d num_auth %d",
- psid->revision, psid->num_subauth));
+ cFYI(1, "SID revision %d num_auth %d",
+ psid->revision, psid->num_subauth);
for (i = 0; i < psid->num_subauth; i++) {
- cFYI(1, ("SID sub_auth[%d]: 0x%x ", i,
- le32_to_cpu(psid->sub_auth[i])));
+ cFYI(1, "SID sub_auth[%d]: 0x%x ", i,
+ le32_to_cpu(psid->sub_auth[i]));
}
/* BB add length check to make sure that we do not have huge
num auths and therefore go off the end */
- cFYI(1, ("RID 0x%x",
- le32_to_cpu(psid->sub_auth[psid->num_subauth-1])));
+ cFYI(1, "RID 0x%x",
+ le32_to_cpu(psid->sub_auth[psid->num_subauth-1]));
#endif
}
@@ -481,11 +482,11 @@ static int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len,
le32_to_cpu(pntsd->gsidoffset));
dacloffset = le32_to_cpu(pntsd->dacloffset);
dacl_ptr = (struct cifs_acl *)((char *)pntsd + dacloffset);
- cFYI(DBG2, ("revision %d type 0x%x ooffset 0x%x goffset 0x%x "
+ cFYI(DBG2, "revision %d type 0x%x ooffset 0x%x goffset 0x%x "
"sacloffset 0x%x dacloffset 0x%x",
pntsd->revision, pntsd->type, le32_to_cpu(pntsd->osidoffset),
le32_to_cpu(pntsd->gsidoffset),
- le32_to_cpu(pntsd->sacloffset), dacloffset));
+ le32_to_cpu(pntsd->sacloffset), dacloffset);
/* cifs_dump_mem("owner_sid: ", owner_sid_ptr, 64); */
rc = parse_sid(owner_sid_ptr, end_of_acl);
if (rc)
@@ -499,7 +500,7 @@ static int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len,
parse_dacl(dacl_ptr, end_of_acl, owner_sid_ptr,
group_sid_ptr, fattr);
else
- cFYI(1, ("no ACL")); /* BB grant all or default perms? */
+ cFYI(1, "no ACL"); /* BB grant all or default perms? */
/* cifscred->uid = owner_sid_ptr->rid;
cifscred->gid = group_sid_ptr->rid;
@@ -556,13 +557,18 @@ static struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb,
{
struct cifs_ntsd *pntsd = NULL;
int xid, rc;
+ struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
+
+ if (IS_ERR(tlink))
+ return NULL;
xid = GetXid();
- rc = CIFSSMBGetCIFSACL(xid, cifs_sb->tcon, fid, &pntsd, pacllen);
+ rc = CIFSSMBGetCIFSACL(xid, tlink_tcon(tlink), fid, &pntsd, pacllen);
FreeXid(xid);
+ cifs_put_tlink(tlink);
- cFYI(1, ("GetCIFSACL rc = %d ACL len %d", rc, *pacllen));
+ cFYI(1, "GetCIFSACL rc = %d ACL len %d", rc, *pacllen);
return pntsd;
}
@@ -573,22 +579,29 @@ static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb,
int oplock = 0;
int xid, rc;
__u16 fid;
+ struct cifsTconInfo *tcon;
+ struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
+
+ if (IS_ERR(tlink))
+ return NULL;
+ tcon = tlink_tcon(tlink);
xid = GetXid();
- rc = CIFSSMBOpen(xid, cifs_sb->tcon, path, FILE_OPEN, READ_CONTROL, 0,
+ rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, READ_CONTROL, 0,
&fid, &oplock, NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc) {
- cERROR(1, ("Unable to open file to get ACL"));
+ cERROR(1, "Unable to open file to get ACL");
goto out;
}
- rc = CIFSSMBGetCIFSACL(xid, cifs_sb->tcon, fid, &pntsd, pacllen);
- cFYI(1, ("GetCIFSACL rc = %d ACL len %d", rc, *pacllen));
+ rc = CIFSSMBGetCIFSACL(xid, tcon, fid, &pntsd, pacllen);
+ cFYI(1, "GetCIFSACL rc = %d ACL len %d", rc, *pacllen);
- CIFSSMBClose(xid, cifs_sb->tcon, fid);
+ CIFSSMBClose(xid, tcon, fid);
out:
+ cifs_put_tlink(tlink);
FreeXid(xid);
return pntsd;
}
@@ -602,7 +615,7 @@ static struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *cifs_sb,
struct cifsFileInfo *open_file = NULL;
if (inode)
- open_file = find_readable_file(CIFS_I(inode));
+ open_file = find_readable_file(CIFS_I(inode), true);
if (!open_file)
return get_cifs_acl_by_path(cifs_sb, path, pacllen);
@@ -615,12 +628,17 @@ static int set_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb, __u16 fid,
struct cifs_ntsd *pnntsd, u32 acllen)
{
int xid, rc;
+ struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
+
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
xid = GetXid();
- rc = CIFSSMBSetCIFSACL(xid, cifs_sb->tcon, fid, pnntsd, acllen);
+ rc = CIFSSMBSetCIFSACL(xid, tlink_tcon(tlink), fid, pnntsd, acllen);
FreeXid(xid);
+ cifs_put_tlink(tlink);
- cFYI(DBG2, ("SetCIFSACL rc = %d", rc));
+ cFYI(DBG2, "SetCIFSACL rc = %d", rc);
return rc;
}
@@ -630,23 +648,30 @@ static int set_cifs_acl_by_path(struct cifs_sb_info *cifs_sb, const char *path,
int oplock = 0;
int xid, rc;
__u16 fid;
+ struct cifsTconInfo *tcon;
+ struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
+ if (IS_ERR(tlink))
+ return PTR_ERR(tlink);
+
+ tcon = tlink_tcon(tlink);
xid = GetXid();
- rc = CIFSSMBOpen(xid, cifs_sb->tcon, path, FILE_OPEN, WRITE_DAC, 0,
+ rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, WRITE_DAC, 0,
&fid, &oplock, NULL, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc) {
- cERROR(1, ("Unable to open file to set ACL"));
+ cERROR(1, "Unable to open file to set ACL");
goto out;
}
- rc = CIFSSMBSetCIFSACL(xid, cifs_sb->tcon, fid, pnntsd, acllen);
- cFYI(DBG2, ("SetCIFSACL rc = %d", rc));
+ rc = CIFSSMBSetCIFSACL(xid, tcon, fid, pnntsd, acllen);
+ cFYI(DBG2, "SetCIFSACL rc = %d", rc);
- CIFSSMBClose(xid, cifs_sb->tcon, fid);
- out:
+ CIFSSMBClose(xid, tcon, fid);
+out:
FreeXid(xid);
+ cifs_put_tlink(tlink);
return rc;
}
@@ -658,9 +683,9 @@ static int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
struct cifsFileInfo *open_file;
int rc;
- cFYI(DBG2, ("set ACL for %s from mode 0x%x", path, inode->i_mode));
+ cFYI(DBG2, "set ACL for %s from mode 0x%x", path, inode->i_mode);
- open_file = find_readable_file(CIFS_I(inode));
+ open_file = find_readable_file(CIFS_I(inode), true);
if (!open_file)
return set_cifs_acl_by_path(cifs_sb, path, pnntsd, acllen);
@@ -678,7 +703,7 @@ cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
u32 acllen = 0;
int rc = 0;
- cFYI(DBG2, ("converting ACL to mode for %s", path));
+ cFYI(DBG2, "converting ACL to mode for %s", path);
if (pfid)
pntsd = get_cifs_acl_by_fid(cifs_sb, *pfid, &acllen);
@@ -689,7 +714,7 @@ cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
if (pntsd)
rc = parse_sec_desc(pntsd, acllen, fattr);
if (rc)
- cFYI(1, ("parse sec desc failed rc = %d", rc));
+ cFYI(1, "parse sec desc failed rc = %d", rc);
kfree(pntsd);
return;
@@ -703,7 +728,7 @@ int mode_to_acl(struct inode *inode, const char *path, __u64 nmode)
struct cifs_ntsd *pntsd = NULL; /* acl obtained from server */
struct cifs_ntsd *pnntsd = NULL; /* modified acl to be sent to server */
- cFYI(DBG2, ("set ACL from mode for %s", path));
+ cFYI(DBG2, "set ACL from mode for %s", path);
/* Get the security descriptor */
pntsd = get_cifs_acl(CIFS_SB(inode->i_sb), inode, path, &secdesclen);
@@ -720,19 +745,19 @@ int mode_to_acl(struct inode *inode, const char *path, __u64 nmode)
DEFSECDESCLEN : secdesclen;
pnntsd = kmalloc(secdesclen, GFP_KERNEL);
if (!pnntsd) {
- cERROR(1, ("Unable to allocate security descriptor"));
+ cERROR(1, "Unable to allocate security descriptor");
kfree(pntsd);
return -ENOMEM;
}
rc = build_sec_desc(pntsd, pnntsd, inode, nmode);
- cFYI(DBG2, ("build_sec_desc rc: %d", rc));
+ cFYI(DBG2, "build_sec_desc rc: %d", rc);
if (!rc) {
/* Set the security descriptor */
rc = set_cifs_acl(pnntsd, secdesclen, inode, path);
- cFYI(DBG2, ("set_cifs_acl rc: %d", rc));
+ cFYI(DBG2, "set_cifs_acl rc: %d", rc);
}
kfree(pnntsd);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-24 21:02:47 +0000