*: move get_sock_lsa and xwrite_str to libbb, use where appropriate

function                                             old     new   delta
get_sock_lsa                                           -      72     +72
buffer_fill_and_print                                179     196     +17
parse_expr                                           824     832      +8
read_base64                                          343     348      +5
nameval                                              202     206      +4
fbset_main                                          1694    1698      +4
expand                                              1849    1853      +4
udhcp_send_kernel_packet                             249     252      +3
udhcp_get_option                                     223     222      -1
chat_main                                           1246    1245      -1
pack_gzip                                           1661    1659      -2
doset                                                299     297      -2
bb__parsespent                                       119     117      -2
test_main                                            260     257      -3
qgravechar                                           109     106      -3
tcpudpsvd_main                                      1834    1830      -4
sysctl_display_all                                   589     580      -9
xopen_xwrite_close                                    44      33     -11
prs                                                   30      18     -12
find_main                                            418     406     -12
full_write2_str                                       25      12     -13
adduser_main                                         667     654     -13
evaltreenr                                           817     802     -15
evaltree                                             817     802     -15
tftpd_main                                           526     493     -33
ftpd_main                                           2050    1990     -60
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 7/18 up/down: 117/-211)         Total: -94 bytes

1 files changed, 1 insertions, 6 deletions

diff --git a/procps/sysctl.c b/procps/sysctl.c
index d59e2690a..862cd1756 100644
--- a/procps/sysctl.c
+++ b/procps/sysctl.c
@@ -21,11 +21,6 @@ static int sysctl_display_all(const char *path);
 static int sysctl_handle_preload_file(const char *filename);
 static void sysctl_dots_to_slashes(char *name);
 
-static void dwrite_str(int fd, const char *buf)
-{
-        write(fd, buf, strlen(buf));
-}
-
 enum {
         FLAG_SHOW_KEYS       = 1 << 0,
         FLAG_SHOW_KEY_ERRORS = 1 << 1,
@@ -147,7 +142,7 @@ static int sysctl_act_on_setting(char *setting)
         }
 
         if (option_mask32 & FLAG_WRITE) {
-                dwrite_str(fd, value);
+                xwrite_str(fd, value);
                 close(fd);
                 if (option_mask32 & FLAG_SHOW_KEYS)
                         printf("%s = ", outname);