X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=procps%2Fps.c;h=18a6db36fa14b74e6b993f616b2618f2877168f8;hb=8cbaa450305f771825dc9cd4a326fcec352264d2;hp=4496faa31a4cf9f9fbf669e3c0232c1257481569;hpb=0ecb54a0f3fece5e42f089036f059973bed8d87e;p=oweals%2Fbusybox.git diff --git a/procps/ps.c b/procps/ps.c index 4496faa31..18a6db36f 100644 --- a/procps/ps.c +++ b/procps/ps.c @@ -1,155 +1,115 @@ +/* vi: set sw=4 ts=4: */ /* - * Mini ps implementation for busybox + * Mini ps implementation(s) for busybox * + * Copyright (C) 1999-2004 by Erik Andersen * - * Copyright (C) 1999 by Lineo, inc. - * Written by Erik Andersen , + * 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 +#include #include #include -#include +#include #include #include - -#if ! defined BB_FEATURE_USE_PROCFS -#error Sorry, I depend on the /proc filesystem right now. +#include +#include +#include +#include "busybox.h" +#ifdef CONFIG_SELINUX +#include /* 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; } +