/*
* Mini ps implementation(s) for busybox
*
- * Copyright (C) 1999,2000 by Lineo, inc. Written by Erik Andersen
- * <andersen@lineo.com>, <andersee@debian.org>
- *
- *
- * This contains _two_ implementations of ps for Linux. One uses the
- * traditional /proc virtual filesystem, and the other use the devps kernel
- * driver (written by Erik Andersen to avoid using /proc thereby saving 100k+).
- *
- *
+ * Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.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
* 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 <errno.h>
#include <fcntl.h>
#include <ctype.h>
+#include <string.h>
+#include <termios.h>
#include <sys/ioctl.h>
-#define BB_DECLARE_EXTERN
-#define bb_need_help
-#include "messages.c"
-
-#define TERMINAL_WIDTH 79 /* not 80 in case terminal has linefold bug */
-
-
-
-#if ! defined BB_FEATURE_USE_DEVPS_PATCH
-
-/* The following is the first ps implementation --
- * the one using the /proc virtual filesystem.
- */
-
-#if ! defined BB_FEATURE_USE_PROCFS
-#error Sorry, I depend on the /proc filesystem right now.
+#include "busybox.h"
+#ifdef CONFIG_SELINUX
+#include <fs_secure.h>
+#include <ss.h>
+#include <flask_util.h> /* for is_flask_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
- errorMsg("Internal error!\n");
-
- /* For busybox, ignoring effective, saved, etc */
- tmp = strstr(S, "Uid:");
- if (tmp)
- sscanf(tmp, "Uid:\t%d", &P->ruid);
- else
- errorMsg("Internal error!\n");
-
- tmp = strstr(S, "Gid:");
- if (tmp)
- sscanf(tmp, "Gid:\t%d", &P->rgid);
- else
- errorMsg("Internal error!\n");
+static const int TERMINAL_WIDTH = 79; /* not 80 in case terminal has linefold bug */
-}
-const char ps_usage[] =
- "ps\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
- "\nReport process status\n"
- "\nThis version of ps accepts no options.\n"
-#endif
- ;
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 len, i, c;
-#ifdef BB_FEATURE_AUTOWIDTH
+ procps_status_t * p;
+ int i, len;
+#ifdef CONFIG_FEATURE_AUTOWIDTH
struct winsize win = { 0, 0, 0, 0 };
int terminal_width = TERMINAL_WIDTH;
#else
#define terminal_width TERMINAL_WIDTH
#endif
+#ifdef CONFIG_SELINUX
+ int use_selinux = 0;
+ security_id_t sid;
+ if(is_flask_enabled() && argv[1] && !strcmp(argv[1], "-c") )
+ use_selinux = 1;
+#endif
- if (argc > 1 && strcmp(argv[1], dash_dash_help) == 0)
- usage(ps_usage);
-
- dir = opendir("/proc");
- if (!dir)
- fatalError("Can't open /proc\n");
-
-#ifdef BB_FEATURE_AUTOWIDTH
+#ifdef CONFIG_FEATURE_AUTOWIDTH
ioctl(fileno(stdout), TIOCGWINSZ, &win);
if (win.ws_col > 0)
terminal_width = win.ws_col - 1;
#endif
- 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);
- }
-
- /* Make some adjustments as needed */
- my_getpwuid(uidName, p.ruid);
- if (*uidName == '\0')
- sprintf(uidName, "%d", p.ruid);
- my_getgrgid(groupName, p.rgid);
- if (*groupName == '\0')
- sprintf(groupName, "%d", p.rgid);
-
- sprintf(path, "/proc/%s/cmdline", entry->d_name);
- file = fopen(path, "r");
- if (file == NULL)
- continue;
- i = 0;
- len = fprintf(stdout, "%5d %-8s %-8s %c ", p.pid, uidName, groupName,
- p.state);
- while (((c = getc(file)) != EOF) && (i < (terminal_width-len))) {
- i++;
- if (c == '\0')
- c = ' ';
- putc(c, stdout);
- }
- if (i == 0)
- fprintf(stdout, "[%s]", p.cmd);
- fprintf(stdout, "\n");
- }
- closedir(dir);
- return(TRUE);
-}
-
-
-#else /* BB_FEATURE_USE_DEVPS_PATCH */
-
-
-/* The following is the second ps implementation --
- * this one uses the nifty new devps kernel device.
- */
-
-#include <linux/devps.h> /* For Erik's nifty devps device driver */
-
-
-extern int ps_main(int argc, char **argv)
-{
- char device[] = "/dev/ps";
- int i, j, len, fd;
- pid_t num_pids;
- pid_t* pid_array = NULL;
- struct pid_info info;
- char uidName[10] = "";
- char groupName[10] = "";
-#ifdef BB_FEATURE_AUTOWIDTH
- struct winsize win = { 0, 0, 0, 0 };
- int terminal_width = TERMINAL_WIDTH;
+#ifdef CONFIG_SELINUX
+ if(use_selinux)
+ printf(" PID Context Stat Command\n");
+ else
+#endif
+ printf(" PID Uid VmSize Stat Command\n");
+#ifdef CONFIG_SELINUX
+ while ((p = procps_scan(1, use_selinux, &sid)) != 0) {
#else
-#define terminal_width TERMINAL_WIDTH
+ while ((p = procps_scan(1)) != 0) {
#endif
+ char *namecmd = p->cmd;
- if (argc > 1 && **(argv + 1) == '-')
- usage(ps_usage);
-
- /* open device */
- fd = open(device, O_RDONLY);
- if (fd < 0)
- fatalError( "open failed for `%s': %s\n", device, strerror (errno));
-
- /* Find out how many processes there are */
- if (ioctl (fd, DEVPS_GET_NUM_PIDS, &num_pids)<0)
- fatalError( "\nDEVPS_GET_PID_LIST: %s\n", strerror (errno));
-
- /* Allocate some memory -- grab a few extras just in case
- * some new processes start up while we wait. The kernel will
- * just ignore any extras if we give it too many, and will trunc.
- * the list if we give it too few. */
- pid_array = (pid_t*) calloc( num_pids+10, sizeof(pid_t));
- pid_array[0] = num_pids+10;
-
- /* Now grab the pid list */
- if (ioctl (fd, DEVPS_GET_PID_LIST, pid_array)<0)
- fatalError("\nDEVPS_GET_PID_LIST: %s\n", strerror (errno));
+#ifdef CONFIG_SELINUX
+ if(use_selinux)
+ {
+ char sbuf[128];
+ len = sizeof(sbuf);
+ if(security_sid_to_context(sid, (security_context_t)&sbuf, &len))
+ strcpy(sbuf, "unknown");
-#ifdef BB_FEATURE_AUTOWIDTH
- ioctl(fileno(stdout), TIOCGWINSZ, &win);
- if (win.ws_col > 0)
- terminal_width = win.ws_col - 1;
+ len = printf("%5d %-32s %s ", p->pid, sbuf, p->state);
+ }
+ else
#endif
-
- /* Print up a ps listing */
- fprintf(stdout, "%5s %-8s %-3s %5s %s\n", "PID", "Uid", "Gid",
- "State", "Command");
-
- for (i=1; i<pid_array[0] ; i++) {
- uidName[0] = '\0';
- groupName[0] = '\0';
- info.pid = pid_array[i];
-
- if (ioctl (fd, DEVPS_GET_PID_INFO, &info)<0)
- fatalError("\nDEVPS_GET_PID_INFO: %s\n", strerror (errno));
-
- /* Make some adjustments as needed */
- my_getpwuid(uidName, info.euid);
- if (*uidName == '\0')
- sprintf(uidName, "%ld", info.euid);
- my_getgrgid(groupName, info.egid);
- if (*groupName == '\0')
- sprintf(groupName, "%ld", info.egid);
-
- len = fprintf(stdout, "%5d %-8s %-8s %c ", info.pid, uidName, groupName, info.state);
-
- if (strlen(info.command_line) > 1) {
- for( j=0; j<(sizeof(info.command_line)-1) && j < (terminal_width-len); j++) {
- if (*(info.command_line+j) == '\0' && *(info.command_line+j+1) != '\0') {
- *(info.command_line+j) = ' ';
- }
- }
- *(info.command_line+j) = '\0';
- fprintf(stdout, "%s\n", info.command_line);
+ 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 {
- fprintf(stdout, "[%s]\n", info.name);
+ 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);
}
-
- /* Free memory */
- free( pid_array);
-
- /* close device */
- if (close (fd) != 0)
- fatalError("close failed for `%s': %s\n", device, strerror (errno));
-
- exit (0);
+ return EXIT_SUCCESS;
}
-#endif /* BB_FEATURE_USE_DEVPS_PATCH */
-
projects / oweals / busybox.git / blobdiff