*
* Copyright 1998 by Albert Cahalan; all rights reserved.
* Copyright (C) 2002 by Vladimir Oleynik <dzo@simtreas.ru>
- * GNU Library General Public License Version 2, or any later version
*
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include <dirent.h>
#include <string.h>
#include <stdlib.h>
+#include <sys/param.h>
#include <unistd.h>
-#include <asm/page.h>
#include <fcntl.h>
#include "libbb.h"
static int read_to_buf(const char *filename, void *buf)
{
- int fd;
ssize_t ret;
-
- fd = open(filename, O_RDONLY);
- if(fd < 0)
- return -1;
- ret = read(fd, buf, PROCPS_BUFSIZE);
- close(fd);
+ ret = open_read_close(filename, buf, PROCPS_BUFSIZE-1);
+ ((char *)buf)[ret > 0 ? ret : 0] = '\0';
return ret;
}
-extern procps_status_t * procps_scan(int save_user_arg0)
+procps_status_t * procps_scan(int save_user_arg0)
{
static DIR *dir;
struct dirent *entry;
struct stat sb;
if (!dir) {
- dir = opendir("/proc");
- if(!dir)
- bb_error_msg_and_die("Can't open /proc");
+ dir = xopendir("/proc");
}
- for(;;) {
- if((entry = readdir(dir)) == NULL) {
+ for (;;) {
+ entry = readdir(dir);
+ if (entry == NULL) {
closedir(dir);
dir = 0;
return 0;
curstatus.pid = pid;
status_tail = status + sprintf(status, "/proc/%d", pid);
- if(stat(status, &sb))
+ if (stat(status, &sb))
continue;
bb_getpwuid(curstatus.user, sb.st_uid, sizeof(curstatus.user));
+ /* see proc(5) for some details on this */
strcpy(status_tail, "/stat");
n = read_to_buf(status, buf);
- if(n < 0)
+ if (n < 0)
continue;
name = strrchr(buf, ')'); /* split into "PID (cmd" and "<rest>" */
- if(name == 0 || name[1] != ' ')
+ if (name == 0 || name[1] != ' ')
continue;
*name = 0;
sscanf(buf, "%*s (%15c", curstatus.short_cmd);
"%*s %*s %*s %*s " /* pgrp, session, tty, tpgid */
"%*s %*s %*s %*s %*s " /* flags, min_flt, cmin_flt, maj_flt, cmaj_flt */
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
- "%lu %lu "
+ "%lu %lu " /* utime, stime */
#else
- "%*s %*s "
+ "%*s %*s " /* utime, stime */
#endif
"%*s %*s %*s " /* cutime, cstime, priority */
- "%ld "
+ "%ld " /* nice */
"%*s %*s %*s " /* timeout, it_real_value, start_time */
"%*s " /* vsize */
- "%ld",
+ "%ld", /* rss */
curstatus.state, &curstatus.ppid,
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
&curstatus.utime, &curstatus.stime,
&tasknice,
&curstatus.rss);
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
- if(n != 6)
+ if (n != 6)
#else
- if(n != 4)
+ if (n != 4)
#endif
continue;
curstatus.rss *= (getpagesize() >> 10); /* 2**10 = 1kb */
#endif
- if(save_user_arg0) {
+ if (save_user_arg0) {
strcpy(status_tail, "/cmdline");
n = read_to_buf(status, buf);
- if(n > 0) {
- if(buf[n-1]=='\n')
+ if (n > 0) {
+ if (buf[n-1]=='\n')
buf[--n] = 0;
name = buf;
- while(n) {
- if(((unsigned char)*name) < ' ')
+ while (n) {
+ if (((unsigned char)*name) < ' ')
*name = ' ';
name++;
n--;
}
*name = 0;
- if(buf[0])
+ if (buf[0])
curstatus.cmd = strdup(buf);
/* if NULL it work true also */
}
return memcpy(&ret_status, &curstatus, sizeof(procps_status_t));
}
}
-
-/* END CODE */
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/