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| author | Christoph Hellwig <hch@infradead.org> | 2013-12-20 05:16:41 -0800 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-01-25 23:58:18 -0500 |
| commit | 5bf3258fd2acd8515450ab8efcd97c9d3b69f7f9 (patch) | |
| tree | 117a3aba664aa9859cc346bdedbaf1c54c39d7a1 /fs/posix_acl.c | |
| parent | 2aeccbe957d0d2b9fbb2a236e53a955097e2a9ce (diff) | |
| download | kernel-common-5bf3258fd2acd8515450ab8efcd97c9d3b69f7f9.tar.gz kernel-common-5bf3258fd2acd8515450ab8efcd97c9d3b69f7f9.tar.bz2 kernel-common-5bf3258fd2acd8515450ab8efcd97c9d3b69f7f9.zip | |
fs: make posix_acl_chmod more useful
Rename the current posix_acl_chmod to __posix_acl_chmod and add
a fully featured ACL chmod helper that uses the ->set_acl inode
operation.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/posix_acl.c')
| -rw-r--r-- | fs/posix_acl.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/fs/posix_acl.c b/fs/posix_acl.c index e699b076cdd8..08218550b0db 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -364,7 +364,7 @@ static int posix_acl_create_masq(struct posix_acl *acl, umode_t *mode_p) /* * Modify the ACL for the chmod syscall. */ -static int posix_acl_chmod_masq(struct posix_acl *acl, umode_t mode) +static int __posix_acl_chmod_masq(struct posix_acl *acl, umode_t mode) { struct posix_acl_entry *group_obj = NULL, *mask_obj = NULL; struct posix_acl_entry *pa, *pe; @@ -428,12 +428,12 @@ posix_acl_create(struct posix_acl **acl, gfp_t gfp, umode_t *mode_p) EXPORT_SYMBOL(posix_acl_create); int -posix_acl_chmod(struct posix_acl **acl, gfp_t gfp, umode_t mode) +__posix_acl_chmod(struct posix_acl **acl, gfp_t gfp, umode_t mode) { struct posix_acl *clone = posix_acl_clone(*acl, gfp); int err = -ENOMEM; if (clone) { - err = posix_acl_chmod_masq(clone, mode); + err = __posix_acl_chmod_masq(clone, mode); if (err) { posix_acl_release(clone); clone = NULL; @@ -443,6 +443,30 @@ posix_acl_chmod(struct posix_acl **acl, gfp_t gfp, umode_t mode) *acl = clone; return err; } +EXPORT_SYMBOL(__posix_acl_chmod); + +int +posix_acl_chmod(struct inode *inode) +{ + struct posix_acl *acl; + int ret = 0; + + if (!IS_POSIXACL(inode)) + return 0; + if (!inode->i_op->set_acl) + return -EOPNOTSUPP; + + acl = get_acl(inode, ACL_TYPE_ACCESS); + if (IS_ERR_OR_NULL(acl)) + return PTR_ERR(acl); + + ret = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); + if (ret) + return ret; + ret = inode->i_op->set_acl(inode, acl, ACL_TYPE_ACCESS); + posix_acl_release(acl); + return ret; +} EXPORT_SYMBOL(posix_acl_chmod); /* |