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s3: Handle stat call with capability in vfs_gpfs

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Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Christof Schmitt <cs@samba.org>

Autobuild-User(master): Christof Schmitt <cs@samba.org>
Autobuild-Date(master): Mon Dec 16 20:05:23 CET 2013 on sn-devel-104
This commit is contained in:
Abhidnya Joshi 2013-12-10 11:01:43 +01:00 committed by Christof Schmitt
parent 47175f5760
commit 92257ee41f
1 changed files with 56 additions and 0 deletions
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56
source3/modules/vfs_gpfs.c
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@ -1411,6 +1411,46 @@ static ssize_t gpfs_get_xattr(struct vfs_handle_struct *handle, const char *pat
return 4;
}
#if defined(HAVE_FSTATAT)
static int stat_with_capability(struct vfs_handle_struct *handle,
struct smb_filename *smb_fname, int flag)
{
int fd = -1;
bool b;
char *dir_name;
const char *rel_name = NULL;
struct stat st;
int ret = -1;
b = parent_dirname(talloc_tos(), smb_fname->base_name,
&dir_name, &rel_name);
if (!b) {
errno = ENOMEM;
return -1;
}
fd = open(dir_name, O_RDONLY, 0);
TALLOC_FREE(dir_name);
if (fd == -1) {
return -1;
}
set_effective_capability(DAC_OVERRIDE_CAPABILITY);
ret = fstatat(fd, rel_name, &st, flag);
drop_effective_capability(DAC_OVERRIDE_CAPABILITY);
close(fd);
if (ret == 0) {
init_stat_ex_from_stat(
&smb_fname->st, &st,
lp_fake_dir_create_times(SNUM(handle->conn)));
}
return ret;
}
#endif
static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
struct smb_filename *smb_fname)
{
@ -1425,6 +1465,13 @@ static int vfs_gpfs_stat(struct vfs_handle_struct *handle,
return -1);
ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
#if defined(HAVE_FSTATAT)
if (ret == -1 && errno == EACCES) {
DEBUG(10, ("Trying stat with capability for %s\n",
smb_fname->base_name));
ret = stat_with_capability(handle, smb_fname, 0);
}
#endif
if (ret == -1) {
return -1;
}
@ -1494,6 +1541,15 @@ static int vfs_gpfs_lstat(struct vfs_handle_struct *handle,
return -1);
ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
#if defined(HAVE_FSTATAT)
if (ret == -1 && errno == EACCES) {
DEBUG(10, ("Trying lstat with capability for %s\n",
smb_fname->base_name));
ret = stat_with_capability(handle, smb_fname,
AT_SYMLINK_NOFOLLOW);
}
#endif
if (ret == -1) {
return -1;
}