btrfs-progs: dump-tree: print c/o/s/r time of ROOT_ITEM

[platform/upstream/btrfs-progs.git] / utils.c

diff --git a/utils.c b/utils.c
index 39629a7..524f463 100644 (file)
--- a/utils.c
+++ b/utils.c
@@ -24,6 +24,7 @@
 #include <sys/mount.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/sysinfo.h>
 #include <uuid/uuid.h>
 #include <fcntl.h>
 #include <unistd.h>
@@ -1788,6 +1789,79 @@ out:
        return ret;
 }
 
+int is_seen_fsid(u8 *fsid, struct seen_fsid *seen_fsid_hash[])
+{
+       u8 hash = fsid[0];
+       int slot = hash % SEEN_FSID_HASH_SIZE;
+       struct seen_fsid *seen = seen_fsid_hash[slot];
+
+       while (seen) {
+               if (memcmp(seen->fsid, fsid, BTRFS_FSID_SIZE) == 0)
+                       return 1;
+
+               seen = seen->next;
+       }
+
+       return 0;
+}
+
+int add_seen_fsid(u8 *fsid, struct seen_fsid *seen_fsid_hash[],
+               int fd, DIR *dirstream)
+{
+       u8 hash = fsid[0];
+       int slot = hash % SEEN_FSID_HASH_SIZE;
+       struct seen_fsid *seen = seen_fsid_hash[slot];
+       struct seen_fsid *alloc;
+
+       if (!seen)
+               goto insert;
+
+       while (1) {
+               if (memcmp(seen->fsid, fsid, BTRFS_FSID_SIZE) == 0)
+                       return -EEXIST;
+
+               if (!seen->next)
+                       break;
+
+               seen = seen->next;
+       }
+
+insert:
+       alloc = malloc(sizeof(*alloc));
+       if (!alloc)
+               return -ENOMEM;
+
+       alloc->next = NULL;
+       memcpy(alloc->fsid, fsid, BTRFS_FSID_SIZE);
+       alloc->fd = fd;
+       alloc->dirstream = dirstream;
+
+       if (seen)
+               seen->next = alloc;
+       else
+               seen_fsid_hash[slot] = alloc;
+
+       return 0;
+}
+
+void free_seen_fsid(struct seen_fsid *seen_fsid_hash[])
+{
+       int slot;
+       struct seen_fsid *seen;
+       struct seen_fsid *next;
+
+       for (slot = 0; slot < SEEN_FSID_HASH_SIZE; slot++) {
+               seen = seen_fsid_hash[slot];
+               while (seen) {
+                       next = seen->next;
+                       close_file_or_dir(seen->fd, seen->dirstream);
+                       free(seen);
+                       seen = next;
+               }
+               seen_fsid_hash[slot] = NULL;
+       }
+}
+
 static int group_profile_devs_min(u64 flag)
 {
        switch (flag & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
@@ -2615,3 +2689,15 @@ u8 rand_u8(void)
 void btrfs_config_init(void)
 {
 }
+
+/* Returns total size of main memory in bytes, -1UL if error. */
+unsigned long total_memory(void)
+{
+        struct sysinfo si;
+
+        if (sysinfo(&si) < 0) {
+                error("can't determine memory size");
+                return -1UL;
+        }
+        return si.totalram * si.mem_unit;       /* bytes */
+}