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authorDenis Vlasenko2008-03-17 09:07:36 +0000
committerDenis Vlasenko2008-03-17 09:07:36 +0000
commit62a90cdd7435f09f4bb8673e8b7b213067f9d5cc (patch)
treeac7f86c4de0ce0c095b59820c7ba238369c65f71 /coreutils/tail.c
parentd02db892440499a072ea8c83c2370e9d9c103098 (diff)
downloadbusybox-62a90cdd7435f09f4bb8673e8b7b213067f9d5cc.zip
busybox-62a90cdd7435f09f4bb8673e8b7b213067f9d5cc.tar.gz
*: shrink by using [f]open_or_warn_stdin where appropriate
function old new delta lsattr_main 62 143 +81 open_or_warn_stdin - 36 +36 fclose_if_not_stdin 20 47 +27 xfopen_stdin - 20 +20 tac_main 336 356 +20 cksum_main 249 259 +10 bb_argv_dash - 8 +8 su_main 448 455 +7 cmp_main 630 633 +3 passwd_main 1072 1074 +2 uudecode_main 317 315 -2 text_yank 110 108 -2 handle_incoming_and_exit 2653 2651 -2 flags 5 1 -4 write_leases 235 230 -5 fopen_or_warn_stdin 48 42 -6 fold_main 648 642 -6 static.argv_dash 8 - -8 sum_main 142 128 -14 tail_main 1237 1221 -16 sed_main 711 695 -16 cmp_xfopen_input 17 - -17 bb_cat 113 96 -17 catv_main 328 306 -22 strings_main 457 434 -23 hash_file 298 274 -24 sum_file 353 325 -28 sort_main 904 859 -45 expand_main 736 686 -50 cut_main 1116 1065 -51 md5_sha1_sum_main 549 493 -56 lsattr_args 90 - -90 read_stduu 408 255 -153 ------------------------------------------------------------------------------ (add/remove: 3/3 grow/shrink: 7/20 up/down: 214/-657) Total: -443 bytes text data bss dec hex filename 797417 658 7428 805503 c4a7f busybox_old 796973 658 7428 805059 c48c3 busybox_unstripped
Diffstat (limited to 'coreutils/tail.c')
-rw-r--r--coreutils/tail.c22
1 files changed, 9 insertions, 13 deletions
diff --git a/coreutils/tail.c b/coreutils/tail.c
index 340697f..52aa8f6 100644
--- a/coreutils/tail.c
+++ b/coreutils/tail.c
@@ -101,16 +101,12 @@ int tail_main(int argc, char **argv)
#if ENABLE_INCLUDE_SUSv2 || ENABLE_FEATURE_FANCY_TAIL
/* Allow legacy syntax of an initial numeric option without -n. */
- if (argc >= 2 && (argv[1][0] == '+' || argv[1][0] == '-')
+ if (argv[1] && (argv[1][0] == '+' || argv[1][0] == '-')
&& isdigit(argv[1][1])
) {
- /* replacing arg[0] with "-n" can segfault, so... */
- argv[1] = xasprintf("-n%s", argv[1]);
-#if 0 /* If we ever decide to make tail NOFORK */
- char *s = alloca(strlen(argv[1]) + 3);
- sprintf(s, "-n%s", argv[1]);
- argv[1] = s;
-#endif
+ count = eat_num(&argv[1][1]);
+ argv++;
+ argc--;
}
#endif
@@ -133,8 +129,7 @@ int tail_main(int argc, char **argv)
/* open all the files */
fds = xmalloc(sizeof(int) * (argc + 1));
- nfiles = i = 0;
- if (argc == 0) {
+ if (!argv[0]) {
struct stat statbuf;
if (!fstat(STDIN_FILENO, &statbuf) && S_ISFIFO(statbuf.st_mode)) {
@@ -142,13 +137,14 @@ int tail_main(int argc, char **argv)
}
*argv = (char *) bb_msg_standard_input;
}
+ nfiles = i = 0;
do {
- FILE* fil = fopen_or_warn_stdin(argv[i]);
- if (!fil) {
+ int fd = open_or_warn_stdin(argv[i]);
+ if (fd < 0) {
G.status = EXIT_FAILURE;
continue;
}
- fds[nfiles] = fileno(fil);
+ fds[nfiles] = fd;
argv[nfiles++] = argv[i];
} while (++i < argc);