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authorDenis Vlasenko2007-04-11 23:20:53 +0000
committerDenis Vlasenko2007-04-11 23:20:53 +0000
commit50f7f446ecaadef6895a4ee601567e0b68330637 (patch)
treea10f1d7fd192b8c7ee6cb3d5aa46a0295dd08f2a /coreutils/cat.c
parentd7c8196c1bba74d1e27ac9cb5e2eb57413daa463 (diff)
downloadbusybox-50f7f446ecaadef6895a4ee601567e0b68330637.zip
busybox-50f7f446ecaadef6895a4ee601567e0b68330637.tar.gz
bb_full_fd_action: remove potential xmalloc from NOFORK path
cat: stop using stdio.h opens libbb: introduce & use open[3]_or_warn function old new delta open3_or_warn - 54 +54 bb_cat 115 144 +29 open_or_warn - 25 +25 unlzma 2404 2412 +8 chattr_main 334 339 +5 xstrtoul_range_sfx 251 255 +4 telnet_main 1514 1510 -4 static.opt 4 - -4 qgravechar 122 118 -4 fuser_add_pid 61 54 -7 fuser_add_inode 154 147 -7 writeFileToTarball 1542 1534 -8 refresh 1156 1148 -8 do_show 856 846 -10 read_leases 212 200 -12 setup_redirects 236 222 -14 iproute_list_or_flush 1582 1568 -14 read_config 427 411 -16 write_leases 284 264 -20 hash_file 338 318 -20 copy_file 1760 1740 -20 do_iproute 2610 2588 -22 bb_full_fd_action 320 269 -51 open_to_or_warn 103 49 -54 fuser_main 1660 1596 -64 .rodata 131160 131096 -64 ------------------------------------------------------------------------------ (add/remove: 2/1 grow/shrink: 4/19 up/down: 125/-423) Total: -298 bytes
Diffstat (limited to 'coreutils/cat.c')
-rw-r--r--coreutils/cat.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/coreutils/cat.c b/coreutils/cat.c
index eb141dc..ed3f336 100644
--- a/coreutils/cat.c
+++ b/coreutils/cat.c
@@ -19,18 +19,21 @@ int bb_cat(char **argv)
{
static const char *const argv_dash[] = { "-", NULL };
- FILE *f;
+ int fd;
int retval = EXIT_SUCCESS;
if (!*argv)
argv = (char**) &argv_dash;
do {
- f = fopen_or_warn_stdin(*argv);
- if (f) {
+ fd = STDIN_FILENO;
+ if (!LONE_DASH(*argv))
+ fd = open_or_warn(*argv, O_RDONLY);
+ if (fd >= 0) {
/* This is not an xfunc - never exits */
- off_t r = bb_copyfd_eof(fileno(f), STDOUT_FILENO);
- fclose_if_not_stdin(f);
+ off_t r = bb_copyfd_eof(fd, STDOUT_FILENO);
+ if (fd != STDIN_FILENO)
+ close(fd);
if (r >= 0)
continue;
}