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https://github.com/kdave/btrfs-progs
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btrfs-progs: move out print in cmd_df to another function
This is a prepatory work for the btrfs fi show command fixes. So that we have a function get_df to get the fs sizes Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Anand Jain
Chris Mason
parent
33ce9a82b8
commit
23c47a132f
@ -43,13 +43,110 @@ static const char * const cmd_df_usage[] = {
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NULL
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};
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static char *group_type_str(u64 flag)
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{
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switch (flag & BTRFS_BLOCK_GROUP_TYPE_MASK) {
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case BTRFS_BLOCK_GROUP_DATA:
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return "Data";
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case BTRFS_BLOCK_GROUP_SYSTEM:
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return "System";
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case BTRFS_BLOCK_GROUP_METADATA:
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return "Metadata";
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case BTRFS_BLOCK_GROUP_DATA|BTRFS_BLOCK_GROUP_METADATA:
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return "Data+Metadata";
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default:
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return "unknown";
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}
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}
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static char *group_profile_str(u64 flag)
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{
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switch (flag & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
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case 0:
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return "single";
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case BTRFS_BLOCK_GROUP_RAID0:
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return "RAID0";
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case BTRFS_BLOCK_GROUP_RAID1:
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return "RAID1";
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case BTRFS_BLOCK_GROUP_RAID5:
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return "RAID5";
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case BTRFS_BLOCK_GROUP_RAID6:
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return "RAID6";
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case BTRFS_BLOCK_GROUP_DUP:
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return "DUP";
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case BTRFS_BLOCK_GROUP_RAID10:
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return "RAID10";
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default:
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return "unknown";
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}
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}
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static int get_df(int fd, struct btrfs_ioctl_space_args **sargs_ret)
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{
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u64 count = 0;
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int ret, e;
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struct btrfs_ioctl_space_args *sargs;
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sargs = malloc(sizeof(struct btrfs_ioctl_space_args));
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if (!sargs)
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return -ENOMEM;
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sargs->space_slots = 0;
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sargs->total_spaces = 0;
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ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
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e = errno;
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if (ret) {
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fprintf(stderr, "ERROR: couldn't get space info - %s\n",
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strerror(e));
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free(sargs);
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return ret;
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}
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if (!sargs->total_spaces) {
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free(sargs);
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return 0;
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}
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count = sargs->total_spaces;
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free(sargs);
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sargs = malloc(sizeof(struct btrfs_ioctl_space_args) +
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(count * sizeof(struct btrfs_ioctl_space_info)));
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if (!sargs)
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ret = -ENOMEM;
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sargs->space_slots = count;
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sargs->total_spaces = 0;
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ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
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e = errno;
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if (ret) {
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fprintf(stderr, "ERROR: get space info count %llu - %s\n",
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count, strerror(e));
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free(sargs);
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return ret;
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}
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*sargs_ret = sargs;
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return 0;
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}
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static void print_df(struct btrfs_ioctl_space_args *sargs)
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{
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u64 i;
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struct btrfs_ioctl_space_info *sp = sargs->spaces;
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for (i = 0; i < sargs->total_spaces; i++, sp++) {
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printf("%s, %s: total=%s, used=%s\n",
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group_type_str(sp->flags),
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group_profile_str(sp->flags),
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pretty_size(sp->total_bytes),
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pretty_size(sp->used_bytes));
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}
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}
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static int cmd_df(int argc, char **argv)
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{
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struct btrfs_ioctl_space_args *sargs, *sargs_orig;
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u64 count = 0, i;
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struct btrfs_ioctl_space_args *sargs = NULL;
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int ret;
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int fd;
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int e;
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char *path;
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DIR *dirstream = NULL;
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@ -63,101 +160,16 @@ static int cmd_df(int argc, char **argv)
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fprintf(stderr, "ERROR: can't access to '%s'\n", path);
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return 1;
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}
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ret = get_df(fd, &sargs);
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sargs_orig = sargs = malloc(sizeof(struct btrfs_ioctl_space_args));
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if (!sargs) {
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ret = -ENOMEM;
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goto out;
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if (!ret && sargs) {
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print_df(sargs);
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free(sargs);
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} else {
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fprintf(stderr, "ERROR: get_df failed %s\n", strerror(ret));
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}
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sargs->space_slots = 0;
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sargs->total_spaces = 0;
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ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
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e = errno;
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if (ret) {
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fprintf(stderr, "ERROR: couldn't get space info on '%s' - %s\n",
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path, strerror(e));
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goto out;
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}
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if (!sargs->total_spaces) {
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ret = 0;
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goto out;
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}
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count = sargs->total_spaces;
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sargs = realloc(sargs, sizeof(struct btrfs_ioctl_space_args) +
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(count * sizeof(struct btrfs_ioctl_space_info)));
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if (!sargs) {
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sargs = sargs_orig;
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ret = -ENOMEM;
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goto out;
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}
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sargs->space_slots = count;
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sargs->total_spaces = 0;
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ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
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e = errno;
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if (ret) {
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fprintf(stderr, "ERROR: couldn't get space info on '%s' - %s\n",
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path, strerror(e));
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goto out;
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}
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for (i = 0; i < sargs->total_spaces; i++) {
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char description[80];
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int written = 0;
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u64 flags = sargs->spaces[i].flags;
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memset(description, 0, 80);
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if (flags & BTRFS_BLOCK_GROUP_DATA) {
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if (flags & BTRFS_BLOCK_GROUP_METADATA) {
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snprintf(description, 14, "%s",
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"Data+Metadata");
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written += 13;
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} else {
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snprintf(description, 5, "%s", "Data");
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written += 4;
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}
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} else if (flags & BTRFS_BLOCK_GROUP_SYSTEM) {
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snprintf(description, 7, "%s", "System");
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written += 6;
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} else if (flags & BTRFS_BLOCK_GROUP_METADATA) {
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snprintf(description, 9, "%s", "Metadata");
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written += 8;
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}
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if (flags & BTRFS_BLOCK_GROUP_RAID0) {
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snprintf(description+written, 8, "%s", ", RAID0");
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written += 7;
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} else if (flags & BTRFS_BLOCK_GROUP_RAID1) {
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snprintf(description+written, 8, "%s", ", RAID1");
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written += 7;
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} else if (flags & BTRFS_BLOCK_GROUP_DUP) {
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snprintf(description+written, 6, "%s", ", DUP");
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written += 5;
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} else if (flags & BTRFS_BLOCK_GROUP_RAID10) {
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snprintf(description+written, 9, "%s", ", RAID10");
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written += 8;
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} else if (flags & BTRFS_BLOCK_GROUP_RAID5) {
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snprintf(description+written, 9, "%s", ", RAID5");
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written += 7;
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} else if (flags & BTRFS_BLOCK_GROUP_RAID6) {
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snprintf(description+written, 9, "%s", ", RAID6");
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written += 7;
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}
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printf("%s: total=%s, used=%s\n", description,
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pretty_size(sargs->spaces[i].total_bytes),
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pretty_size(sargs->spaces[i].used_bytes));
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}
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out:
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close_file_or_dir(fd, dirstream);
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free(sargs);
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return !!ret;
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}
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11
ctree.h
11
ctree.h
@ -834,6 +834,17 @@ struct btrfs_csum_item {
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#define BTRFS_BLOCK_GROUP_RAID6 (1ULL << 8)
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#define BTRFS_BLOCK_GROUP_RESERVED BTRFS_AVAIL_ALLOC_BIT_SINGLE
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#define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \
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BTRFS_BLOCK_GROUP_SYSTEM | \
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BTRFS_BLOCK_GROUP_METADATA)
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#define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \
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BTRFS_BLOCK_GROUP_RAID1 | \
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BTRFS_BLOCK_GROUP_RAID5 | \
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BTRFS_BLOCK_GROUP_RAID6 | \
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BTRFS_BLOCK_GROUP_DUP | \
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BTRFS_BLOCK_GROUP_RAID10)
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/* used in struct btrfs_balance_args fields */
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#define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48)
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