+/* vi: set sw=4 ts=4: */
/*
- * Mini ps implementation for busybox
+ * Mini ps implementation(s) for busybox
*
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
- * Copyright (C) 1999 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
*
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include "internal.h"
+#include <stdio.h>
+#include <stdlib.h>
#include <unistd.h>
#include <dirent.h>
-#include <stdio.h>
+#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
-
-#if ! defined BB_FEATURE_USE_PROCFS
-#error Sorry, I depend on the /proc filesystem right now.
+#include <string.h>
+#include <termios.h>
+#include <sys/ioctl.h>
+#include "busybox.h"
+#ifdef CONFIG_SELINUX
+#include <selinux/selinux.h> /* for is_selinux_enabled() */
#endif
-typedef struct proc_s {
- char
- cmd[16]; /* basename of executable file in call to exec(2) */
- int
- ruid, rgid, /* real only (sorry) */
- pid, /* process id */
- ppid; /* pid of parent process */
- char
- state; /* single-char code for process state (S=sleeping) */
-} proc_t;
-
-
-
-static int file2str(char *filename, char *ret, int cap)
-{
- int fd, num_read;
-
- if ( (fd = open(filename, O_RDONLY, 0)) == -1 ) return -1;
- if ( (num_read = read(fd, ret, cap - 1)) <= 0 ) return -1;
- ret[num_read] = 0;
- close(fd);
- return num_read;
-}
-
-
-static void parse_proc_status(char* S, proc_t* P)
-{
- char* tmp;
- memset(P->cmd, 0, sizeof P->cmd);
- sscanf (S, "Name:\t%15c", P->cmd);
- tmp = strchr(P->cmd,'\n');
- if (tmp)
- *tmp='\0';
- tmp = strstr (S,"State");
- sscanf (tmp, "State:\t%c", &P->state);
-
- tmp = strstr (S,"Pid:");
- if(tmp) sscanf (tmp,
- "Pid:\t%d\n"
- "PPid:\t%d\n",
- &P->pid,
- &P->ppid
- );
- else fprintf(stderr, "Internal error!\n");
+static const int TERMINAL_WIDTH = 79; /* not 80 in case terminal has linefold bug */
- /* For busybox, ignoring effective, saved, etc */
- tmp = strstr (S,"Uid:");
- if(tmp) sscanf (tmp,
- "Uid:\t%d", &P->ruid);
- else fprintf(stderr, "Internal error!\n");
-
- tmp = strstr (S,"Gid:");
- if(tmp) sscanf (tmp,
- "Gid:\t%d", &P->rgid);
- else fprintf(stderr, "Internal error!\n");
-
-}
extern int ps_main(int argc, char **argv)
{
- proc_t p;
- DIR *dir;
- FILE *file;
- struct dirent *entry;
- char path[32], sbuf[512];
- char uidName[10]="";
- char groupName[10]="";
- int i, c;
-
- if ( argc>1 && **(argv+1) == '-' ) {
- usage ("ps\n\nReport process status\n\nThis version of ps accepts no options.\n");
- }
-
- dir = opendir("/proc");
- if (!dir) {
- perror("Can't open /proc");
- exit(FALSE);
- }
-
- fprintf(stdout, "%5s %-8s %-3s %5s %s\n", "PID", "Uid", "Gid", "State", "Command");
- while ((entry = readdir(dir)) != NULL) {
- uidName[0]='\0';
- groupName[0]='\0';
-
- if (! isdigit(*entry->d_name))
- continue;
- sprintf(path, "/proc/%s/status", entry->d_name);
- if ((file2str(path, sbuf, sizeof sbuf)) != -1 ) {
- parse_proc_status(sbuf, &p);
- }
+ procps_status_t * p;
+ int i, len;
+ int terminal_width = TERMINAL_WIDTH;
+
+#ifdef CONFIG_SELINUX
+ int use_selinux = 0;
+ security_context_t sid=NULL;
+ if(is_selinux_enabled() && argv[1] && !strcmp(argv[1], "-c") )
+ use_selinux = 1;
+#endif
- /* Make some adjustments as needed */
- my_getpwuid( uidName, p.ruid);
- my_getgrgid( groupName, p.rgid);
- if (*uidName == '\0')
- sprintf( uidName, "%d", p.ruid);
- if (*groupName == '\0')
- sprintf( groupName, "%d", p.rgid);
+ get_terminal_width_height(0, &terminal_width, NULL);
+ /* Go one less... */
+ terminal_width--;
- fprintf(stdout, "%5d %-8s %-8s %c ", p.pid, uidName, groupName, p.state);
- sprintf(path, "/proc/%s/cmdline", entry->d_name);
- file = fopen(path, "r");
- if (file == NULL) {
- perror(path);
- exit(FALSE);
- }
- i=0;
- while (((c = getc(file)) != EOF) && (i < 53)) {
- i++;
- if (c == '\0')
- c = ' ';
- putc(c, stdout);
+#ifdef CONFIG_SELINUX
+ if (use_selinux)
+ printf(" PID Context Stat Command\n");
+ else
+#endif
+ printf(" PID Uid VmSize Stat Command\n");
+
+ while ((p = procps_scan(1)) != 0) {
+ char *namecmd = p->cmd;
+#ifdef CONFIG_SELINUX
+ if ( use_selinux )
+ {
+ char sbuf[128];
+ len = sizeof(sbuf);
+
+ if (is_selinux_enabled()) {
+ if (getpidcon(p->pid,&sid)<0)
+ sid=NULL;
+ }
+
+ if (sid) {
+ /* I assume sid initilized with NULL */
+ len = strlen(sid)+1;
+ safe_strncpy(sbuf, sid, len);
+ freecon(sid);
+ sid=NULL;
+ }else {
+ safe_strncpy(sbuf, "unknown",7);
+ }
+ len = printf("%5d %-32s %s ", p->pid, sbuf, p->state);
+ }
+ else
+#endif
+ if(p->rss == 0)
+ len = printf("%5d %-8s %s ", p->pid, p->user, p->state);
+ else
+ len = printf("%5d %-8s %6ld %s ", p->pid, p->user, p->rss, p->state);
+ i = terminal_width-len;
+
+ if(namecmd != 0 && namecmd[0] != 0) {
+ if(i < 0)
+ i = 0;
+ if(strlen(namecmd) > i)
+ namecmd[i] = 0;
+ printf("%s\n", namecmd);
+ } else {
+ namecmd = p->short_cmd;
+ if(i < 2)
+ i = 2;
+ if(strlen(namecmd) > (i-2))
+ namecmd[i-2] = 0;
+ printf("[%s]\n", namecmd);
+ }
+ free(p->cmd);
}
- if (i==0)
- fprintf(stdout, "%s", p.cmd);
- fprintf(stdout, "\n");
- }
- closedir(dir);
- exit(TRUE);
+ return EXIT_SUCCESS;
}
+
projects / oweals / busybox.git / blobdiff