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| author | Miklos Szeredi <mszeredi@redhat.com> | 2020-05-14 17:44:24 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2020-05-14 17:44:24 +0300 |
| commit | fa2fcf4f1df1559a0a4ee0f46915b496cc2ebf60 (patch) | |
| tree | d25e1c625ea59a128dc263d18b653986498f0806 /fs/stat.c | |
| parent | 761e28fa270a3cc0f2ae9a0f4f778239b91a9df2 (diff) | |
| download | linux-fa2fcf4f1df1559a0a4ee0f46915b496cc2ebf60.tar.xz | |
statx: add mount ID
Systemd is hacking around to get it and it's trivial to add to statx, so...
Cc: linux-api@vger.kernel.org
Cc: linux-man@vger.kernel.org
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/stat.c')
| -rw-r--r-- | fs/stat.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/stat.c b/fs/stat.c index f7f07d1b73cb..3d88c99f7743 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -22,6 +22,7 @@ #include <asm/unistd.h> #include "internal.h" +#include "mount.h" /** * generic_fillattr - Fill in the basic attributes from the inode struct @@ -199,6 +200,8 @@ retry: goto out; error = vfs_getattr(&path, stat, request_mask, flags); + stat->mnt_id = real_mount(path.mnt)->mnt_id; + stat->result_mask |= STATX_MNT_ID; path_put(&path); if (retry_estale(error, lookup_flags)) { lookup_flags |= LOOKUP_REVAL; @@ -563,6 +566,7 @@ cp_statx(const struct kstat *stat, struct statx __user *buffer) tmp.stx_rdev_minor = MINOR(stat->rdev); tmp.stx_dev_major = MAJOR(stat->dev); tmp.stx_dev_minor = MINOR(stat->dev); + tmp.stx_mnt_id = stat->mnt_id; return copy_to_user(buffer, &tmp, sizeof(tmp)) ? -EFAULT : 0; } |