more of -Wall fixes from Cristian Ionescu-Idbohrn.

Some are fixing real bugs.

function                                             old     new   delta
syslogd_main                                         938     958     +20
get_signum                                           136     143      +7
obj_load                                             777     782      +5
recv_from_to                                         210     214      +4
get_next_block                                      1795    1799      +4
display_topmem_process_list                         1117    1121      +4
logread_main                                         484     487      +3
buffer_fill_and_print                                 73      76      +3
kill_main                                            687     689      +2
ll_remember_index                                    240     241      +1
do_stats                                             452     453      +1
if_readconf                                          166     165      -1
display_process_list                                1192    1191      -1
run_applet_and_exit                                  507     505      -2
print_signames                                        33      31      -2
parse_one_line                                      1092    1090      -2
find_out_spec                                         57      55      -2
add_ksymoops_symbols                                 421     419      -2
ash_main                                            1407    1402      -5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 11/8 up/down: 54/-17)            Total: 37 bytes

procps/kill.c

@@ -106,19 +106,19 @@ int kill_main(int argc, char **argv)
 	argc--;
 
 do_it_now:
+	pid = getpid();
 
 	if (killall5) {
 		pid_t sid;
 		procps_status_t* p = NULL;
 
+		/* Find out our own session id */
+		sid = getsid(pid);
 		/* Now stop all processes */
 		kill(-1, SIGSTOP);
-		/* Find out our own session id */
-		pid = getpid();
-		sid = getsid(pid);
 		/* Now kill all processes except our session */
 		while ((p = procps_scan(p, PSSCAN_PID|PSSCAN_SID))) {
-			if (p->sid != sid && p->pid != pid && p->pid != 1)
+			if (p->sid != (unsigned)sid && p->pid != (unsigned)pid && p->pid != 1)
 				kill(p->pid, signo);
 		}
 		/* And let them continue */
@@ -134,7 +134,6 @@ do_it_now:
 
 	if (killall) {
 		/* Looks like they want to do a killall.  Do that */
-		pid = getpid();
 		while (arg) {
 			pid_t* pidList;
 

procps/pgrep.c

@@ -115,7 +115,7 @@ int pgrep_main(int argc ATTRIBUTE_UNUSED, char **argv)
 			cmd = proc->comm;
 		/* NB: OPT_INVERT is always 0 or 1 */
 		if ((regexec(&re_buffer, cmd, 1, re_match, 0) == 0 /* match found */
-		     && (!OPT_ANCHOR || (re_match[0].rm_so == 0 && re_match[0].rm_eo == strlen(cmd)))) ^ OPT_INVERT
+		     && (!OPT_ANCHOR || (re_match[0].rm_so == 0 && re_match[0].rm_eo == (regoff_t)strlen(cmd)))) ^ OPT_INVERT
 		) {
 			matched_pid = proc->pid;
 			if (OPT_LAST) {

procps/pidof.c

@@ -59,7 +59,7 @@ int pidof_main(int argc ATTRIBUTE_UNUSED, char **argv)
 			if (opt & OPT_OMIT) {
 				llist_t *omits_p = omits;
 				while (omits_p) {
-					if (xatoul(omits_p->data) == *pl) {
+					if (xatoul(omits_p->data) == (unsigned long)(*pl)) {
 						goto omitting;
 					}
 					omits_p = omits_p->link;

procps/ps.c

@@ -310,7 +310,7 @@ static ps_out_t* new_out_t(void)
 
 static const ps_out_t* find_out_spec(const char *name)
 {
-	int i;
+	unsigned i;
 	for (i = 0; i < ARRAY_SIZE(out_spec); i++) {
 		if (!strcmp(name, out_spec[i].name))
 			return &out_spec[i];

procps/top.c

@@ -53,7 +53,7 @@ typedef struct jiffy_counts_t {
    the next. Used for finding deltas. */
 typedef struct save_hist {
 	unsigned long ticks;
-	unsigned pid;
+	pid_t pid;
 } save_hist;
 
 typedef int (*cmp_funcp)(top_status_t *P, top_status_t *Q);
@@ -317,7 +317,7 @@ static unsigned long display_header(int scr_width)
 	fclose(fp);
 
 	/* output memory info */
-	if (scr_width > sizeof(scrbuf))
+	if (scr_width > (int)sizeof(scrbuf))
 		scr_width = sizeof(scrbuf);
 	snprintf(scrbuf, scr_width,
 		"Mem: %luK used, %luK free, %luK shrd, %luK buff, %luK cached",
@@ -481,7 +481,7 @@ static NOINLINE void display_process_list(int count, int scr_width)
 				, SHOW_STAT(pcpu)
 #endif
 		);
-		if (col + 1 < scr_width)
+		if ((int)(col + 1) < scr_width)
 			read_cmdline(line_buf + col, scr_width - col - 1, s->pid, s->comm);
 		fputs(line_buf, stdout);
 		/* printf(" %d/%d %lld/%lld", s->pcpu, total_pcpu,
@@ -584,7 +584,7 @@ static char *grab_number(char *str, const char *match, unsigned sz)
 static void display_topmem_header(int scr_width)
 {
 	char linebuf[128];
-	int i;
+	unsigned i;
 	FILE *fp;
 	union {
 		struct {
@@ -703,7 +703,7 @@ static NOINLINE void display_topmem_process_list(int count, int scr_width)
 		ulltoa6_and_space(s->dirty_sh, &line_buf[6*6]);
 		ulltoa6_and_space(s->stack   , &line_buf[7*6]);
 		line_buf[8*6] = '\0';
-		if (scr_width > MIN_WIDTH) {
+		if (scr_width > (int)MIN_WIDTH) {
 			read_cmdline(&line_buf[8*6], scr_width - MIN_WIDTH, s->pid, s->comm);
 		}
 		printf("\n""%.*s", scr_width, line_buf);