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utils: switch to has_fs_type()

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Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2017-08-01 23:33:43 +02:00
parent a035c53af1
commit 29a11a7f1b
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GPG Key ID: 7B3C391EFEA93624
2 changed files with 13 additions and 11 deletions
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23
src/lxc/utils.c
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@ -42,7 +42,6 @@
#include <sys/prctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/vfs.h>
#include <sys/wait.h>
#include "log.h"
@ -183,22 +182,24 @@ static int _recursive_rmdir(char *dirname, dev_t pdev,
return failed ? -1 : 0;
}
/* we have two different magic values for overlayfs, yay */
/* We have two different magic values for overlayfs, yay. */
#ifndef OVERLAYFS_SUPER_MAGIC
#define OVERLAYFS_SUPER_MAGIC 0x794c764f
#endif
#ifndef OVERLAY_SUPER_MAGIC
#define OVERLAY_SUPER_MAGIC 0x794c7630
/*
* In overlayfs, st_dev is unreliable. so on overlayfs we don't do
* the lxc_rmdir_onedev()
#endif
/* In overlayfs, st_dev is unreliable. So on overlayfs we don't do the
* lxc_rmdir_onedev()
*/
static bool is_native_overlayfs(const char *path)
{
struct statfs sb;
if (statfs(path, &sb) < 0)
return false;
if (sb.f_type == OVERLAYFS_SUPER_MAGIC ||
sb.f_type == OVERLAY_SUPER_MAGIC)
if (has_fs_type(path, OVERLAY_SUPER_MAGIC) ||
has_fs_type(path, OVERLAYFS_SUPER_MAGIC))
return true;
return false;
}

1
src/lxc/utils.h
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@ -34,6 +34,7 @@
#include <stdbool.h>
#include <unistd.h>
#include <linux/loop.h>
#include <linux/magic.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/vfs.h>