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Open map_files with O_PATH

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This descriptor is stat()-ed and used to dump file information.
In both cases even read access is not required. Even if we decide
to go dump ghost file out of it we'll re-open one with O_RDONLY.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
This commit is contained in:
Pavel Emelyanov 2015-11-06 12:00:51 +03:00
parent 427ea60bba
commit a3a10c44af
1 changed files with 1 additions and 1 deletions
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2
proc_parse.c
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@ -214,7 +214,7 @@ static int vma_get_mapfile(char *fname, struct vma_area *vma, DIR *mfd,
* so later we might refer to it via /proc/self/fd/vm_file_fd
* if needed.
*/
vma->vm_file_fd = openat(dirfd(mfd), path, O_RDONLY);
vma->vm_file_fd = openat(dirfd(mfd), path, O_PATH);
if (vma->vm_file_fd < 0) {
if (errno == ENOENT)
/* Just mapping w/o map_files link */