libbb: introduce and use is_prefixed_with()
function old new delta
is_prefixed_with - 18 +18
complete_username 78 77 -1
man_main 737 735 -2
fsck_device 429 427 -2
unpack_ar_archive 80 76 -4
strip_unsafe_prefix 105 101 -4
singlemount 1054 1050 -4
rtc_adjtime_is_utc 90 86 -4
resolve_mount_spec 88 84 -4
parse_one_line 1029 1025 -4
parse_conf 1460 1456 -4
may_wakeup 83 79 -4
loadkmap_main 219 215 -4
get_irqs_from_stat 103 99 -4
get_header_cpio 913 909 -4
findfs_main 79 75 -4
fbsplash_main 1230 1226 -4
load_crontab 776 771 -5
expand_vars_to_list 1151 1146 -5
date_main 881 876 -5
skip_dev_pfx 30 24 -6
make_device 2199 2193 -6
complete_cmd_dir_file 773 767 -6
run_applet_and_exit 715 708 -7
uudecode_main 321 313 -8
pwdx_main 197 189 -8
execute 568 560 -8
i2cdetect_main 1186 1176 -10
procps_scan 1242 1230 -12
procps_read_smaps 1017 1005 -12
process_module 746 734 -12
patch_main 1903 1891 -12
nfsmount 3572 3560 -12
stack_machine 126 112 -14
process_timer_stats 449 435 -14
match_fstype 111 97 -14
do_ipaddr 1344 1330 -14
open_list_and_close 359 343 -16
get_header_tar 1795 1779 -16
prepend_new_eth_table 340 323 -17
fsck_main 1811 1794 -17
find_iface_state 56 38 -18
dnsd_main 1321 1303 -18
base_device 179 158 -21
find_keyword 104 82 -22
handle_incoming_and_exit 2785 2762 -23
parse_and_put_prompt 774 746 -28
modinfo 347 317 -30
find_action 204 171 -33
update_passwd 1470 1436 -34
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/libbb/update_passwd.c b/libbb/update_passwd.c
index dc26ebd..a2004f4 100644
--- a/libbb/update_passwd.c
+++ b/libbb/update_passwd.c
@@ -84,7 +84,6 @@
char *fnamesfx;
char *sfx_char;
char *name_colon;
- unsigned user_len;
int old_fd;
int new_fd;
int i;
@@ -108,7 +107,6 @@
fnamesfx = xasprintf("%s+", filename);
sfx_char = &fnamesfx[strlen(fnamesfx)-1];
name_colon = xasprintf("%s:", name ? name : "");
- user_len = strlen(name_colon);
if (shadow)
old_fp = fopen(filename, "r+");
@@ -179,7 +177,7 @@
while (list) {
list++;
next_list_element:
- if (strncmp(list, member, member_len) == 0) {
+ if (is_prefixed_with(list, member)) {
char c;
changed_lines++;
c = list[member_len];
@@ -201,13 +199,14 @@
goto next;
}
- if (strncmp(name_colon, line, user_len) != 0) {
+ cp = is_prefixed_with(line, name_colon);
+ if (!cp) {
fprintf(new_fp, "%s\n", line);
goto next;
}
/* We have a match with "name:"... */
- cp = line + user_len; /* move past name: */
+ /* cp points past "name:" */
#if ENABLE_FEATURE_ADDUSER_TO_GROUP || ENABLE_FEATURE_DEL_USER_FROM_GROUP
if (member) {