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| author | Shirish Pargaonkar <shirishpargaonkar@gmail.com> | 2010-11-27 11:37:54 -0600 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2010-11-30 05:49:24 +0000 |
| commit | fbeba8bb16d7c50362e28f3f91a79fb414903199 (patch) | |
| tree | 8ec770c15edfd25c83c70434cbf1c966b91e325d /fs/cifs/xattr.c | |
| parent | 78415d2d306bfed0a0ac351aec6c69759d007224 (diff) | |
| download | linux-fbeba8bb16d7c50362e28f3f91a79fb414903199.tar.bz2 | |
cifs: Handle extended attribute name cifs_acl to generate cifs acl blob (try #4)
Add extended attribute name system.cifs_acl
Get/generate cifs/ntfs acl blob and hand over to the invoker however
it wants to parse/process it under experimental configurable option CIFS_ACL.
Do not get CIFS/NTFS ACL for xattr for attribute system.posix_acl_access
Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/xattr.c')
| -rw-r--r-- | fs/cifs/xattr.c | 55 |
1 files changed, 30 insertions, 25 deletions
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c index a264b744bb41..eae2a1491608 100644 --- a/fs/cifs/xattr.c +++ b/fs/cifs/xattr.c @@ -30,10 +30,11 @@ #define MAX_EA_VALUE_SIZE 65535 #define CIFS_XATTR_DOS_ATTRIB "user.DosAttrib" +#define CIFS_XATTR_CIFS_ACL "system.cifs_acl" #define CIFS_XATTR_USER_PREFIX "user." #define CIFS_XATTR_SYSTEM_PREFIX "system." #define CIFS_XATTR_OS2_PREFIX "os2." -#define CIFS_XATTR_SECURITY_PREFIX ".security" +#define CIFS_XATTR_SECURITY_PREFIX "security." #define CIFS_XATTR_TRUSTED_PREFIX "trusted." #define XATTR_TRUSTED_PREFIX_LEN 8 #define XATTR_SECURITY_PREFIX_LEN 9 @@ -277,29 +278,8 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); -#ifdef CONFIG_CIFS_EXPERIMENTAL - else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { - __u16 fid; - int oplock = 0; - struct cifs_ntsd *pacl = NULL; - __u32 buflen = 0; - if (experimEnabled) - rc = CIFSSMBOpen(xid, pTcon, full_path, - FILE_OPEN, GENERIC_READ, 0, &fid, - &oplock, NULL, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); - /* else rc is EOPNOTSUPP from above */ - - if (rc == 0) { - rc = CIFSSMBGetCIFSACL(xid, pTcon, fid, &pacl, - &buflen); - CIFSSMBClose(xid, pTcon, fid); - } - } -#endif /* EXPERIMENTAL */ #else - cFYI(1, "query POSIX ACL not supported yet"); + cFYI(1, "Query POSIX ACL not supported yet"); #endif /* CONFIG_CIFS_POSIX */ } else if (strncmp(ea_name, POSIX_ACL_XATTR_DEFAULT, strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) { @@ -311,8 +291,33 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); #else - cFYI(1, "query POSIX default ACL not supported yet"); -#endif + cFYI(1, "Query POSIX default ACL not supported yet"); +#endif /* CONFIG_CIFS_POSIX */ + } else if (strncmp(ea_name, CIFS_XATTR_CIFS_ACL, + strlen(CIFS_XATTR_CIFS_ACL)) == 0) { +#ifdef CONFIG_CIFS_ACL + u32 acllen; + struct cifs_ntsd *pacl; + + pacl = get_cifs_acl(cifs_sb, direntry->d_inode, + full_path, &acllen); + if (IS_ERR(pacl)) { + rc = PTR_ERR(pacl); + cERROR(1, "%s: error %zd getting sec desc", + __func__, rc); + } else { + if (ea_value) { + if (acllen > buf_size) + acllen = -ERANGE; + else + memcpy(ea_value, pacl, acllen); + } + rc = acllen; + kfree(pacl); + } +#else + cFYI(1, "Query CIFS ACL not supported yet"); +#endif /* CONFIG_CIFS_ACL */ } else if (strncmp(ea_name, CIFS_XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) == 0) { cFYI(1, "Trusted xattr namespace not supported yet"); |