diff options
| author | Kent Overstreet <kent.overstreet@linux.dev> | 2025-04-13 18:39:23 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2025-04-13 21:10:24 -0400 |
| commit | c9ee6467183b224b40ca437fd23eeabe0ae6a158 (patch) | |
| tree | 0345ab2882897a8d3c95a5a580f01e69db2e3540 /c_src | |
| parent | 844721635c1c8e7e43fb546052a659bfc92ed99d (diff) | |
Add support for FS_IOC_GETFSSYSFSPATH
With single device mode we won't always show up in sysfs by UUID, but
the new VFS ioctl handles this nicely.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'c_src')
| -rw-r--r-- | c_src/libbcachefs.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/c_src/libbcachefs.c b/c_src/libbcachefs.c index c8503839..31644ea1 100644 --- a/c_src/libbcachefs.c +++ b/c_src/libbcachefs.c @@ -16,6 +16,7 @@ #include <uuid/uuid.h> +#include <linux/fs.h> #include <linux/mm.h> #include "libbcachefs.h" @@ -447,12 +448,19 @@ int bcache_fs_open_fallible(const char *path, struct bchfs_handle *fs) fs->uuid = uuid.uuid; - char uuid_str[40]; - uuid_unparse(uuid.uuid.b, uuid_str); + struct fs_sysfs_path fs_sysfs_path; + if (!ioctl(path_fd, FS_IOC_GETFSSYSFSPATH, &fs_sysfs_path)) { + char *sysfs = mprintf("/sys/fs/%s", fs_sysfs_path.name); + fs->sysfs_fd = xopen(sysfs, O_RDONLY); + free(sysfs); + } else { + char uuid_str[40]; + uuid_unparse(uuid.uuid.b, uuid_str); - char *sysfs = mprintf(SYSFS_BASE "%s", uuid_str); - fs->sysfs_fd = xopen(sysfs, O_RDONLY); - free(sysfs); + char *sysfs = mprintf(SYSFS_BASE "%s", uuid_str); + fs->sysfs_fd = xopen(sysfs, O_RDONLY); + free(sysfs); + } return 0; } |