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tail: fix tail +N

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This commit is contained in:
Denis Vlasenko 2006-12-21 00:43:06 +00:00
parent 3f3190e34c
commit 6910741067
1 changed files with 10 additions and 12 deletions
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22
coreutils/tail.c
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@ -122,15 +122,15 @@ int tail_main(int argc, char **argv)
/* FALLS THROUGH */ /* FALLS THROUGH */
case 'n': case 'n':
#if !ENABLE_DEBUG_YANK_SUSv2 || ENABLE_FEATURE_FANCY_TAIL #if !ENABLE_DEBUG_YANK_SUSv2 || ENABLE_FEATURE_FANCY_TAIL
GET_COUNT: GET_COUNT:
#endif #endif
from_top = 0;
if (*optarg == '+') {
++optarg;
from_top = 1;
}
count = xatol_sfx(optarg, tail_suffixes); count = xatol_sfx(optarg, tail_suffixes);
/* Note: Leading whitespace is an error trapped above. */ /* Note: Leading whitespace is an error trapped above. */
if (*optarg == '+') {
from_top = 1;
} else {
from_top = 0;
}
if (count < 0) { if (count < 0) {
count = -count; count = -count;
} }
@ -150,20 +150,18 @@ int tail_main(int argc, char **argv)
bb_show_usage(); bb_show_usage();
} }
} }
argc -= optind;
argv += optind;
/* open all the files */ /* open all the files */
fds = xmalloc(sizeof(int) * (argc - optind + 1)); fds = xmalloc(sizeof(int) * (argc + 1));
argv += optind;
nfiles = i = 0; nfiles = i = 0;
if (argc == 0) {
if ((argc -= optind) == 0) {
struct stat statbuf; struct stat statbuf;
if (!fstat(STDIN_FILENO, &statbuf) && S_ISFIFO(statbuf.st_mode)) { if (!fstat(STDIN_FILENO, &statbuf) && S_ISFIFO(statbuf.st_mode)) {
follow = 0; follow = 0;
} }
/* --argv; */
*argv = (char *) bb_msg_standard_input; *argv = (char *) bb_msg_standard_input;
goto DO_STDIN; goto DO_STDIN;
} }