diff options
Diffstat (limited to 'gl/lib')
| -rw-r--r-- | gl/lib/acl.c | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/gl/lib/acl.c b/gl/lib/acl.c index 7f73103b5..96153d41c 100644 --- a/gl/lib/acl.c +++ b/gl/lib/acl.c @@ -80,6 +80,9 @@ # define acl_from_mode(mode) (NULL) #endif +#define ACL_NOT_WELL_SUPPORTED(Errno) \ + (Errno == ENOTSUP || Errno == ENOSYS || Errno == EINVAL) + /* We detect the presence of POSIX 1003.1e (draft 17 -- abandoned) support by checking for HAVE_ACL_GET_FILE, HAVE_ACL_SET_FILE, and HAVE_ACL_FREE. Systems that have acl_get_file, acl_set_file, and acl_free must also @@ -125,6 +128,24 @@ chmod_or_fchmod (const char *name, int desc, mode_t mode) return chmod (name, mode); } +#if USE_ACL && HAVE_ACL_GET_FILE && HAVE_ACL_SET_FILE && HAVE_ACL_FREE +/* FIXME: use acl_trivial instead, once we have a replacement function */ +static bool +is_trivial_acl (acl_t acl) +{ + int n = acl_entries (acl); + if (n <= 3) + return true; + if (5 <= n) + return false; + + /* Here, we know there are exactly 4 entries. + If they are for user, group, mask, and other, then return true; */ + /* FIXME */ + return false; +} +#endif + /* Return 1 if NAME has a nontrivial access control list, 0 if NAME only has no or a base access control list, and -1 on error. SB must be set to the stat buffer of FILE. */ @@ -159,7 +180,7 @@ file_has_acl (char const *name, struct stat const *sb) acl_t acl = acl_get_file (name, ACL_TYPE_ACCESS); if (acl) { - ret = (3 < acl_entries (acl)); + ret = !is_trivial_acl (acl); acl_free (acl); if (ret == 0 && S_ISDIR (sb->st_mode)) { @@ -177,7 +198,7 @@ file_has_acl (char const *name, struct stat const *sb) ret = -1; } if (ret < 0) - return (errno == ENOSYS || errno == ENOTSUP) ? 0 : -1; + return ACL_NOT_WELL_SUPPORTED (errno) ? 0 : -1; return ret; } #endif @@ -213,7 +234,7 @@ copy_acl (const char *src_name, int source_desc, const char *dst_name, acl = acl_get_file (src_name, ACL_TYPE_ACCESS); if (acl == NULL) { - if (errno == ENOSYS || errno == ENOTSUP) + if (ACL_NOT_WELL_SUPPORTED (errno)) return set_acl (dst_name, dest_desc, mode); else { @@ -230,12 +251,11 @@ copy_acl (const char *src_name, int source_desc, const char *dst_name, { int saved_errno = errno; - if (errno == ENOSYS || errno == ENOTSUP) + if (ACL_NOT_WELL_SUPPORTED (errno)) { - int n = acl_entries (acl); - + bool trivial = is_trivial_acl (acl); acl_free (acl); - if (n == 3) + if (trivial) { if (chmod_or_fchmod (dst_name, dest_desc, mode) != 0) saved_errno = errno; @@ -366,7 +386,7 @@ set_acl (char const *name, int desc, mode_t mode) int saved_errno = errno; acl_free (acl); - if (errno == ENOTSUP || errno == ENOSYS || errno == EINVAL) + if (ACL_NOT_WELL_SUPPORTED (errno)) { if (chmod_or_fchmod (name, desc, mode) != 0) saved_errno = errno; |