[PATCH 1/2] Make find_updated_files to return value instead of printing

[Anand jain]

From: Anand Jain <anand.j...@oracle.com>

This patch made the function find_updated_files to update the transid
in a pointer instead of printing it on the stdout. This is needed by
the autosnap and anyother program which may want to find the current
transid. Note that when last_gen 3rd parameter is not -1 then
find_updated_files might still print the values on the stdout.

Signed-off-by: Anand Jain <anand.j...@oracle.com>
---
 btrfs-list.c |    4 ++--
 btrfs_cmds.c |    5 ++++-
 btrfs_cmds.h |    2 +-
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/btrfs-list.c b/btrfs-list.c
index 61eddf9..6b642fb 100644
--- a/btrfs-list.c
+++ b/btrfs-list.c
@@ -872,7 +872,7 @@ static int print_one_extent(int fd, struct 
btrfs_ioctl_search_header *sh,
        return 0;
 }
 
-int find_updated_files(int fd, u64 root_id, u64 oldest_gen)
+int find_updated_files(int fd, u64 root_id, u64 oldest_gen, u64 *transid)
 {
        int ret;
        struct btrfs_ioctl_search_args args;
@@ -969,7 +969,7 @@ int find_updated_files(int fd, u64 root_id, u64 oldest_gen)
        }
        free(cache_dir_name);
        free(cache_full_name);
-       printf("transid marker was %llu\n", (unsigned long long)max_found);
+       *transid = max_found;
        return ret;
 }
 
diff --git a/btrfs_cmds.c b/btrfs_cmds.c
index 7aab105..9357305 100644
--- a/btrfs_cmds.c
+++ b/btrfs_cmds.c
@@ -275,6 +275,7 @@ int do_find_newer(int argc, char **argv)
        int ret;
        char *subvol;
        u64 last_gen;
+       u64 *tranid;
 
        subvol = argv[1];
        last_gen = atoll(argv[2]);
@@ -294,9 +295,11 @@ int do_find_newer(int argc, char **argv)
                fprintf(stderr, "ERROR: can't access '%s'\n", subvol);
                return 12;
        }
-       ret = find_updated_files(fd, 0, last_gen);
+       ret = find_updated_files(fd, 0, last_gen, tranid);
        if (ret)
                return 19;
+
+       printf("transid marker was %llu\n", (unsigned long long)*tranid);
        return 0;
 }
 
diff --git a/btrfs_cmds.h b/btrfs_cmds.h
index f53c113..218ed20 100644
--- a/btrfs_cmds.h
+++ b/btrfs_cmds.h
@@ -35,7 +35,7 @@ int do_set_default_subvol(int nargs, char **argv);
 int do_get_default_subvol(int nargs, char **argv);
 int list_subvols(int fd, int print_parent, struct sv_list **head, char *mnt);
 int do_df_filesystem(int nargs, char **argv);
-int find_updated_files(int fd, u64 root_id, u64 oldest_gen);
+int find_updated_files(int fd, u64 root_id, u64 oldest_gen, u64 *transid);
 int do_find_newer(int argc, char **argv);
 int do_change_label(int argc, char **argv);
 int open_file_or_dir(const char *fname);
-- 
1.7.9.2.315.g25a78

--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html