diff options
Diffstat (limited to 'findutils')
| -rw-r--r-- | findutils/find.c | 21 | ||||
| -rw-r--r-- | findutils/grep.c | 28 |
2 files changed, 45 insertions, 4 deletions
diff --git a/findutils/find.c b/findutils/find.c index 53d8239..5d5e24b 100644 --- a/findutils/find.c +++ b/findutils/find.c @@ -1291,9 +1291,27 @@ int find_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int find_main(int argc UNUSED_PARAM, char **argv) { int i, firstopt, status = EXIT_SUCCESS; + char **past_HLP, *saved; INIT_G(); + /* "find -type f" + getopt("+HLP") => disaster. + * Need to avoid getopt running into a non-HLP option. + * Do this by temporarily storing NULL there: + */ + past_HLP = argv; + for (;;) { + saved = *++past_HLP; + if (!saved) + break; + if (saved[0] != '-') + break; + if (!saved[1]) + break; /* it is "-" */ + if ((saved+1)[strspn(saved+1, "HLP")] != '\0') + break; + } + *past_HLP = NULL; /* "+": stop on first non-option */ i = getopt32(argv, "+HLP"); if (i & (1<<0)) @@ -1301,7 +1319,8 @@ int find_main(int argc UNUSED_PARAM, char **argv) if (i & (1<<1)) G.recurse_flags |= ACTION_FOLLOWLINKS | ACTION_DANGLING_OK; /* -P is default and is ignored */ - argv += optind; + argv = past_HLP; /* same result as "argv += optind;" */ + *past_HLP = saved; for (firstopt = 0; argv[firstopt]; firstopt++) { if (argv[firstopt][0] == '-') diff --git a/findutils/grep.c b/findutils/grep.c index b8ad1bf..a7bc4ca 100644 --- a/findutils/grep.c +++ b/findutils/grep.c @@ -373,6 +373,9 @@ static int grep_file(FILE *file) opt_f_not_found: ; } } else { +#if ENABLE_EXTRA_COMPAT + unsigned start_pos; +#endif char *match_at; if (!(gl->flg_mem_alocated_compiled & COMPILED)) { @@ -389,15 +392,18 @@ static int grep_file(FILE *file) #if !ENABLE_EXTRA_COMPAT gl->matched_range.rm_so = 0; gl->matched_range.rm_eo = 0; +#else + start_pos = 0; #endif match_at = line; opt_w_again: +//bb_error_msg("'%s' start_pos:%d line_len:%d", match_at, start_pos, line_len); if ( #if !ENABLE_EXTRA_COMPAT regexec(&gl->compiled_regex, match_at, 1, &gl->matched_range, 0) == 0 #else re_search(&gl->compiled_regex, match_at, line_len, - /*start:*/ 0, /*range:*/ line_len, + start_pos, /*range:*/ line_len, &gl->matched_range) >= 0 #endif ) { @@ -416,8 +422,24 @@ static int grep_file(FILE *file) if (!c || (!isalnum(c) && c != '_')) { found = 1; } else { - match_at += gl->matched_range.rm_eo; - goto opt_w_again; + /* + * Why check gl->matched_range.rm_eo? + * Zero-length match makes -w skip the line: + * "echo foo | grep ^" prints "foo", + * "echo foo | grep -w ^" prints nothing. + * Without such check, we can loop forever. + */ +#if !ENABLE_EXTRA_COMPAT + if (gl->matched_range.rm_eo != 0) { + match_at += gl->matched_range.rm_eo; + goto opt_w_again; + } +#else + if (gl->matched_range.rm_eo > start_pos) { + start_pos = gl->matched_range.rm_eo; + goto opt_w_again; + } +#endif } } } |