:-( to see the entire btrfs_scan_one_dir() going away.
Reviewed-by: Anand Jain <anand.jain@xxxxxxxxxx>
On 21/08/2014 06:24, Eric Sandeen wrote:
After the previous 2 patches, nothing uses
whole-dev-tree scanning, so remove the code which
implemented that functionality.
Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
---
diff --git a/utils.c b/utils.c
index 12ed7a2..765a214 100644
--- a/utils.c
+++ b/utils.c
@@ -1228,117 +1228,6 @@ void btrfs_register_one_device(char *fname)
close(fd);
}
-int btrfs_scan_one_dir(char *dirname, int run_ioctl)
-{
- DIR *dirp = NULL;
- struct dirent *dirent;
- struct pending_dir *pending;
- struct stat st;
- int ret;
- int fd;
- int dirname_len;
- char *fullpath;
- struct list_head pending_list;
- struct btrfs_fs_devices *tmp_devices;
- u64 num_devices;
-
- INIT_LIST_HEAD(&pending_list);
-
- pending = malloc(sizeof(*pending));
- if (!pending)
- return -ENOMEM;
- strcpy(pending->name, dirname);
-
-again:
- dirname_len = strlen(pending->name);
- fullpath = malloc(PATH_MAX);
- dirname = pending->name;
-
- if (!fullpath) {
- ret = -ENOMEM;
- goto fail;
- }
- dirp = opendir(dirname);
- if (!dirp) {
- fprintf(stderr, "Unable to open %s for scanning\n", dirname);
- ret = -errno;
- goto fail;
- }
- while(1) {
- dirent = readdir(dirp);
- if (!dirent)
- break;
- if (dirent->d_name[0] == '.')
- continue;
- if (dirname_len + strlen(dirent->d_name) + 2 > PATH_MAX) {
- ret = -EFAULT;
- goto fail;
- }
- snprintf(fullpath, PATH_MAX, "%s/%s", dirname, dirent->d_name);
- ret = lstat(fullpath, &st);
- if (ret < 0) {
- fprintf(stderr, "failed to stat %s\n", fullpath);
- continue;
- }
- if (S_ISLNK(st.st_mode))
- continue;
- if (S_ISDIR(st.st_mode)) {
- struct pending_dir *next = malloc(sizeof(*next));
- if (!next) {
- ret = -ENOMEM;
- goto fail;
- }
- strcpy(next->name, fullpath);
- list_add_tail(&next->list, &pending_list);
- }
- if (!S_ISBLK(st.st_mode)) {
- continue;
- }
- fd = open(fullpath, O_RDONLY);
- if (fd < 0) {
- /* ignore the following errors:
- ENXIO (device don't exists)
- ENOMEDIUM (No medium found ->
- like a cd tray empty)
- */
- if(errno != ENXIO && errno != ENOMEDIUM)
- fprintf(stderr, "failed to read %s: %s\n",
- fullpath, strerror(errno));
- continue;
- }
- ret = btrfs_scan_one_device(fd, fullpath, &tmp_devices,
- &num_devices,
- BTRFS_SUPER_INFO_OFFSET, 0);
- if (ret == 0 && run_ioctl > 0) {
- btrfs_register_one_device(fullpath);
- }
- close(fd);
- }
- if (!list_empty(&pending_list)) {
- free(pending);
- pending = list_entry(pending_list.next, struct pending_dir,
- list);
- free(fullpath);
- list_del(&pending->list);
- closedir(dirp);
- dirp = NULL;
- goto again;
- }
- ret = 0;
-fail:
- free(pending);
- free(fullpath);
- while (!list_empty(&pending_list)) {
- pending = list_entry(pending_list.next, struct pending_dir,
- list);
- list_del(&pending->list);
- free(pending);
- }
- if (dirp)
- closedir(dirp);
- return ret;
-}
-
int btrfs_device_already_in_root(struct btrfs_root *root, int fd,
int super_offset)
{
@@ -2291,9 +2180,6 @@ int scan_for_btrfs(int where, int update_kernel)
case BTRFS_SCAN_PROC:
ret = btrfs_scan_block_devices(update_kernel);
break;
- case BTRFS_SCAN_DEV:
- ret = btrfs_scan_one_dir("/dev", update_kernel);
- break;
case BTRFS_SCAN_LBLKID:
ret = btrfs_scan_lblkid(update_kernel);
break;
diff --git a/utils.h b/utils.h
index 0c9b65f..3a05131 100644
--- a/utils.h
+++ b/utils.h
@@ -27,9 +27,8 @@
#define BTRFS_MKFS_SMALL_VOLUME_SIZE (1024 * 1024 * 1024)
#define BTRFS_SCAN_PROC (1ULL << 0)
-#define BTRFS_SCAN_DEV (1ULL << 1)
-#define BTRFS_SCAN_MOUNTED (1ULL << 2)
-#define BTRFS_SCAN_LBLKID (1ULL << 3)
+#define BTRFS_SCAN_MOUNTED (1ULL << 1)
+#define BTRFS_SCAN_LBLKID (1ULL << 2)
#define BTRFS_UPDATE_KERNEL 1
@@ -70,7 +69,6 @@ int btrfs_add_to_fsid(struct btrfs_trans_handle *trans,
u32 sectorsize);
int btrfs_scan_for_fsid(int run_ioctls);
void btrfs_register_one_device(char *fname);
-int btrfs_scan_one_dir(char *dirname, int run_ioctl);
char *canonicalize_dm_name(const char *ptname);
char *canonicalize_path(const char *path);
int check_mounted(const char *devicename);
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