libbb: add xfstat function

function                                             old     new   delta
xfstat                                                 -      25     +25
mkfs_ext2_main                                      2421    2423      +2
mkfs_reiser_main                                    1197    1194      -3
next                                                 312     307      -5
ar_main                                              533     522     -11
mkfs_minix_main                                     2938    2924     -14
mkfs_vfat_main                                      1511    1495     -16
writeTarFile                                         272     255     -17
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/6 up/down: 27/-66)            Total: -39 bytes

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>

2 files changed, 2 insertions, 4 deletions

diff --git a/archival/ar.c b/archival/ar.c
index bce62f76d..05556c6cb 100644
--- a/archival/ar.c
+++ b/archival/ar.c
@@ -123,8 +123,7 @@ static int write_ar_archive(archive_handle_t *handle)
         struct stat st;
         archive_handle_t *out_handle;
 
-        if (fstat(handle->src_fd, &st) == -1)
-                bb_simple_perror_msg_and_die(handle->ar__name);
+        xfstat(handle->src_fd, &st, handle->ar__name);
 
         /* if archive exists, create a new handle for output.
          * we create it in place of the old one.
diff --git a/archival/tar.c b/archival/tar.c
index b5cbf4197..2176ad2ac 100644
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -572,8 +572,7 @@ static NOINLINE int writeTarFile(int tar_fd, int verboseFlag,
 
         /* Store the stat info for the tarball's file, so
          * can avoid including the tarball into itself....  */
-        if (fstat(tbInfo.tarFd, &tbInfo.tarFileStatBuf) < 0)
-                bb_perror_msg_and_die("can't stat tar file");
+        xfstat(tbInfo.tarFd, &tbInfo.tarFileStatBuf, "can't stat tar file");
 
 #if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2
         if (gzip)