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authorGravatar Denys Vlasenko <dvlasenk@redhat.com>2010-08-31 12:42:06 +0200
committerGravatar Denys Vlasenko <dvlasenk@redhat.com>2010-08-31 12:42:06 +0200
commit8d3e225a2d1d980bcedb825f294b6a8041fe3f1b (patch)
treebfd632b8dbc3bb25c23aa437ebd0d2ea37818fe9
parent4e7dd3c363377aefd6ac60ab4335e773482bcca1 (diff)
downloadbusybox-8d3e225a2d1d980bcedb825f294b6a8041fe3f1b.tar.gz
busybox-8d3e225a2d1d980bcedb825f294b6a8041fe3f1b.tar.bz2
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>
-rw-r--r--archival/ar.c3
-rw-r--r--archival/tar.c3
-rw-r--r--include/libbb.h1
-rw-r--r--libbb/dump.c4
-rw-r--r--libbb/update_passwd.c2
-rw-r--r--libbb/xfuncs_printf.c10
-rw-r--r--miscutils/ubi_attach_detach.c4
-rw-r--r--shell/ash.c8
-rw-r--r--util-linux/mkfs_ext2.c2
-rw-r--r--util-linux/mkfs_minix.c3
-rw-r--r--util-linux/mkfs_reiser.c4
-rw-r--r--util-linux/mkfs_vfat.c3
-rw-r--r--util-linux/mkswap.c3
13 files changed, 29 insertions, 21 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)
diff --git a/include/libbb.h b/include/libbb.h
index 43e525cb9..6fb0438f5 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -411,6 +411,7 @@ void bb_unsetenv(const char *key) FAST_FUNC;
void bb_unsetenv_and_free(char *key) FAST_FUNC;
void xunlink(const char *pathname) FAST_FUNC;
void xstat(const char *pathname, struct stat *buf) FAST_FUNC;
+void xfstat(int fd, struct stat *buf, const char *errmsg) FAST_FUNC;
int xopen(const char *pathname, int flags) FAST_FUNC;
int xopen_nonblocking(const char *pathname) FAST_FUNC;
int xopen3(const char *pathname, int flags, int mode) FAST_FUNC;
diff --git a/libbb/dump.c b/libbb/dump.c
index a739ff61e..4db3f06f0 100644
--- a/libbb/dump.c
+++ b/libbb/dump.c
@@ -323,9 +323,7 @@ static void do_skip(priv_dumper_t *dumper, const char *fname, int statok)
struct stat sbuf;
if (statok) {
- if (fstat(STDIN_FILENO, &sbuf)) {
- bb_simple_perror_msg_and_die(fname);
- }
+ xfstat(STDIN_FILENO, &sbuf, fname);
if (!(S_ISCHR(sbuf.st_mode) || S_ISBLK(sbuf.st_mode) || S_ISFIFO(sbuf.st_mode))
&& dumper->pub.dump_skip >= sbuf.st_size
) {
diff --git a/libbb/update_passwd.c b/libbb/update_passwd.c
index e050dfc0e..a2be0f155 100644
--- a/libbb/update_passwd.c
+++ b/libbb/update_passwd.c
@@ -133,7 +133,7 @@ int FAST_FUNC update_passwd(const char *filename,
goto close_old_fp;
created:
- if (!fstat(old_fd, &sb)) {
+ if (fstat(old_fd, &sb) == 0) {
fchmod(new_fd, sb.st_mode & 0777); /* ignore errors */
fchown(new_fd, sb.st_uid, sb.st_gid);
}
diff --git a/libbb/xfuncs_printf.c b/libbb/xfuncs_printf.c
index b99f906df..c6db38d33 100644
--- a/libbb/xfuncs_printf.c
+++ b/libbb/xfuncs_printf.c
@@ -436,6 +436,16 @@ void FAST_FUNC xstat(const char *name, struct stat *stat_buf)
bb_perror_msg_and_die("can't stat '%s'", name);
}
+void FAST_FUNC xfstat(int fd, struct stat *stat_buf, const char *errmsg)
+{
+ /* errmsg is usually a file name, but not always:
+ * xfstat may be called in a spot where file name is no longer
+ * available, and caller may give e.g. "can't stat input file" string.
+ */
+ if (fstat(fd, stat_buf))
+ bb_simple_perror_msg_and_die(errmsg);
+}
+
// selinux_or_die() - die if SELinux is disabled.
void FAST_FUNC selinux_or_die(void)
{
diff --git a/miscutils/ubi_attach_detach.c b/miscutils/ubi_attach_detach.c
index 15377aa37..18ffd4df2 100644
--- a/miscutils/ubi_attach_detach.c
+++ b/miscutils/ubi_attach_detach.c
@@ -63,9 +63,9 @@ int ubi_attach_detach_main(int argc UNUSED_PARAM, char **argv)
ubi_ctrl = argv[optind];
fd = xopen(ubi_ctrl, O_RDWR);
- //fstat(fd, &st);
+ //xfstat(fd, &st, ubi_ctrl);
//if (!S_ISCHR(st.st_mode))
- // bb_error_msg_and_die("'%s' is not a char device", ubi_ctrl);
+ // bb_error_msg_and_die("%s: not a char device", ubi_ctrl);
if (do_attach) {
if (!(opts & OPTION_M))
diff --git a/shell/ash.c b/shell/ash.c
index 921367be5..28a8bb60c 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -4989,9 +4989,13 @@ noclobberopen(const char *fname)
* revealed that it was a regular file, and the file has not been
* replaced, return the file descriptor.
*/
- if (fstat(fd, &finfo2) == 0 && !S_ISREG(finfo2.st_mode)
- && finfo.st_dev == finfo2.st_dev && finfo.st_ino == finfo2.st_ino)
+ if (fstat(fd, &finfo2) == 0
+ && !S_ISREG(finfo2.st_mode)
+ && finfo.st_dev == finfo2.st_dev
+ && finfo.st_ino == finfo2.st_ino
+ ) {
return fd;
+ }
/* The file has been replaced. badness. */
close(fd);
diff --git a/util-linux/mkfs_ext2.c b/util-linux/mkfs_ext2.c
index 1c2b3b2e2..6dccd3a5d 100644
--- a/util-linux/mkfs_ext2.c
+++ b/util-linux/mkfs_ext2.c
@@ -221,7 +221,7 @@ int mkfs_ext2_main(int argc UNUSED_PARAM, char **argv)
// open the device, check the device is a block device
xmove_fd(xopen(argv[0], O_WRONLY), fd);
- fstat(fd, &st);
+ xfstat(fd, &st, argv[0]);
if (!S_ISBLK(st.st_mode) && !(option_mask32 & OPT_F))
bb_error_msg_and_die("%s: not a block device", argv[0]);
diff --git a/util-linux/mkfs_minix.c b/util-linux/mkfs_minix.c
index 9e826aef3..95499ba17 100644
--- a/util-linux/mkfs_minix.c
+++ b/util-linux/mkfs_minix.c
@@ -686,8 +686,7 @@ int mkfs_minix_main(int argc UNUSED_PARAM, char **argv)
bb_error_msg_and_die("can't format mounted filesystem");
xmove_fd(xopen(G.device_name, O_RDWR), dev_fd);
- if (fstat(dev_fd, &statbuf) < 0)
- bb_error_msg_and_die("can't stat '%s'", G.device_name);
+ xfstat(dev_fd, &statbuf, G.device_name);
if (!S_ISBLK(statbuf.st_mode))
opt &= ~1; // clear -c (check)
diff --git a/util-linux/mkfs_reiser.c b/util-linux/mkfs_reiser.c
index 6e172d6d3..00ce8f1d1 100644
--- a/util-linux/mkfs_reiser.c
+++ b/util-linux/mkfs_reiser.c
@@ -168,9 +168,9 @@ int mkfs_reiser_main(int argc UNUSED_PARAM, char **argv)
// check the device is a block device
fd = xopen(argv[0], O_WRONLY | O_EXCL);
- fstat(fd, &st);
+ xfstat(fd, &st, argv[0]);
if (!S_ISBLK(st.st_mode) && !(option_mask32 & OPT_f))
- bb_error_msg_and_die("not a block device");
+ bb_error_msg_and_die("%s: not a block device", argv[0]);
// check if it is mounted
// N.B. what if we format a file? find_mount_point will return false negative since
diff --git a/util-linux/mkfs_vfat.c b/util-linux/mkfs_vfat.c
index 211e67e97..45760f7c5 100644
--- a/util-linux/mkfs_vfat.c
+++ b/util-linux/mkfs_vfat.c
@@ -245,8 +245,7 @@ int mkfs_vfat_main(int argc UNUSED_PARAM, char **argv)
volume_id = time(NULL);
dev = xopen(device_name, O_RDWR);
- if (fstat(dev, &st) < 0)
- bb_simple_perror_msg_and_die(device_name);
+ xfstat(dev, &st, device_name);
//
// Get image size and sector size
diff --git a/util-linux/mkswap.c b/util-linux/mkswap.c
index 61a786e92..53537fcd9 100644
--- a/util-linux/mkswap.c
+++ b/util-linux/mkswap.c
@@ -15,8 +15,7 @@ static void mkswap_selinux_setcontext(int fd, const char *path)
if (!is_selinux_enabled())
return;
- if (fstat(fd, &stbuf) < 0)
- bb_perror_msg_and_die("fstat failed");
+ xfstat(fd, &stbuf, argv[0]);
if (S_ISREG(stbuf.st_mode)) {
security_context_t newcon;
security_context_t oldcon = NULL;