Meta has some internal logging that scrapes /proc/self/mountinfo today. I'd like to convert it to use listmount()/statmount(), so we can do a better job of monitoring with containers. We're missing some fields though. This patchset adds them. Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx> --- Changes in v4: - Rename mnt_devname to sb_source - Break statmount_string() behavior changes out into separate patch - Link to v3: https://lore.kernel.org/r/20241107-statmount-v3-0-da5b9744c121@xxxxxxxxxx Changes in v3: - Unescape the result of ->show_devname - Move handling of nothing being emitted out of the switch statement - Link to v2: https://lore.kernel.org/r/20241106-statmount-v2-0-93ba2aad38d1@xxxxxxxxxx Changes in v2: - make statmount_fs_subtype - return fast if no subtype is emitted - new patch to allow statmount() to return devicename - Link to v1: https://lore.kernel.org/r/20241106-statmount-v1-1-b93bafd97621@xxxxxxxxxx --- Jeff Layton (3): fs: don't let statmount return empty strings fs: add the ability for statmount() to report the fs_subtype fs: add the ability for statmount() to report the sb_source fs/namespace.c | 68 ++++++++++++++++++++++++++++++++++++++++++---- include/uapi/linux/mount.h | 6 +++- 2 files changed, 67 insertions(+), 7 deletions(-) --- base-commit: 26213e1a6caa5a7f508b919059b0122b451f4dfe change-id: 20241106-statmount-3f91a7ed75fa Best regards, -- Jeff Layton <jlayton@xxxxxxxxxx>
