261 lines
6.9 KiB
C
261 lines
6.9 KiB
C
/*****************************************************************************
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*
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* pst3
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*
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* License: GPL
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* Copyright (c) 2008 Monitoring Plugins Development Team
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*
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* Description:
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*
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* This file contains the pst3 executable. This is a replacement ps command
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* for Solaris to get output which provides a long argument listing, which
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* is not possible with the standard ps command (due to truncation). /usr/ucb/ps
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* also has issues where some fields run into each other.
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*
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* This executable works by reading process address structures, so needs
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* to be executed as root
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*
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* Originally written by R.W.Ingraham
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* Rewritten by Duncan Ferguson (Altinity Ltd, June 2008)
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* The rewrite was necessary as /dev/kmem is not available within
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* non-global zones on Solaris 10
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*
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* Details for rewrite came from
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* source of /usr/ucb/ps on Solaris:
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* http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/ucbcmd/ps/ps.c#argvoff
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* usenet group posting
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* http://groups.google.com/group/comp.unix.solaris/tree/browse_frm/month/2001-09/bfa40c08bac819a2?rnum=141&_done=%2Fgroup%2Fcomp.unix.solaris%2Fbrowse_frm%2Fmonth%2F2001-09%3F
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*****************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <procfs.h>
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#include <sys/types32.h>
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/*
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* Constants
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*/
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#define PROC_DIR "/proc"
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#define ARGS 30
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/*
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* Globals
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*/
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static char * szProg;
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/*
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* Prototypes
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*/
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void usage();
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/*----------------------------------------------------------------------------*/
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int main (int argc, char **argv)
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{
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DIR *procdir;
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struct dirent *proc;
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char ps_name[ARGS];
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char as_name[ARGS];
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psinfo_t psinfo;
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/* Set our program name global */
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if ((szProg = strrchr(argv[0], '/')) != NULL)
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szProg++;
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else
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szProg = argv[0];
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/* if given any parameters, print out help */
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if(argc > 1) {
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(void)usage();
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exit(1);
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}
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/* Make sure that our euid is root */
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if (geteuid() != 0)
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{
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fprintf(stderr, "%s: This program can only be run by the root user!\n", szProg);
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exit(1);
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}
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if ((procdir = opendir(PROC_DIR)) == NULL) {
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fprintf(stderr, "%s: cannot open PROC directory %s\n", szProg, PROC_DIR);
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exit(1);
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}
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/* Display column headings */
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printf("%c %5s %5s %5s %6s %6s %4s %s %s\n",
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'S',
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"UID",
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"PID",
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"PPID",
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"VSZ",
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"RSS",
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"%CPU",
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"COMMAND",
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"ARGS"
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);
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/* Zip through all of the process entries */
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while((proc = readdir(procdir))) {
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int ps_fd;
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int as_fd;
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off_t argoff;
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int i;
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char *args;
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char *procname;
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char *ptr;
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int argslen;
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uintptr_t args_addr;;
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uintptr_t *args_vecs;;
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int args_count;
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if(proc->d_name[0] == '.')
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continue;
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sprintf(ps_name,"%s/%s/%s",PROC_DIR,proc->d_name,"psinfo");
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sprintf(as_name,"%s/%s/%s",PROC_DIR,proc->d_name,"as");
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try_again:
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if((ps_fd = open(ps_name, O_RDONLY)) == -1)
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continue;
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if((as_fd = open(as_name, O_RDONLY)) == -1)
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continue;
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if(read(ps_fd, &psinfo, sizeof(psinfo)) != sizeof(psinfo)) {
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int err = errno;
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close(ps_fd);
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close(as_fd);
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if(err == EAGAIN) goto try_again;
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if(err != ENOENT)
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fprintf(stderr, "%s: read() on %s: %s\n", szProg,
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ps_name, strerror(err));
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continue;
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}
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close(ps_fd);
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/* system process, ignore since the previous version did */
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if(
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psinfo.pr_nlwp == 0 ||
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strcmp(psinfo.pr_lwp.pr_clname, "SYS") == 0
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) {
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continue;
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}
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/* get the procname to match previous versions */
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procname = strdup(psinfo.pr_psargs);
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if((ptr = strchr(procname, ' ')) != NULL)
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*ptr = '\0';
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if((ptr = strrchr(procname, '/')) != NULL)
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ptr++;
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else
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ptr = procname;
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/*
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* print out what we currently know
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*/
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printf("%c %5d %5d %5d %6lu %6lu %4.1f %s ",
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psinfo.pr_lwp.pr_sname,
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psinfo.pr_euid,
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psinfo.pr_pid,
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psinfo.pr_ppid,
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psinfo.pr_size,
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psinfo.pr_rssize,
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((float)(psinfo.pr_pctcpu) / 0x8000 * 100.0),
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ptr
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);
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free(procname);
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/*
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* and now for the command line stuff
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*/
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args_addr = psinfo.pr_argv;
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args_count = psinfo.pr_argc;
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args_vecs = malloc(args_count * sizeof(uintptr_t));
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if(psinfo.pr_dmodel == PR_MODEL_NATIVE) {
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/* this process matches target process */
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pread(as_fd,args_vecs, args_count * sizeof(uintptr_t),
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args_addr);
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} else {
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/* this process is 64bit, target process is 32 bit*/
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caddr32_t *args_vecs32 = (caddr32_t *)args_vecs;
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pread(as_fd,args_vecs32,args_count * sizeof(caddr32_t),
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args_addr);
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for (i=args_count-1;i>=0;--i)
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args_vecs[i]=args_vecs32[i];
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}
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/*
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* now read in the args - if what we read in fills buffer
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* resize buffer and reread that bit again
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*/
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argslen=ARGS;
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args=malloc(argslen+1);
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for(i=0;i<args_count;i++) {
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memset(args,'\0',argslen+1);
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if(pread(as_fd, args, argslen, args_vecs[i]) <= 0) {
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break;
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}
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args[argslen]='\0';
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if(strlen(args) == argslen){
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argslen += ARGS;
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args = realloc(args, argslen + 1);
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i--;
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continue;
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}
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printf(" %s", args);
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}
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free(args_vecs);
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free(args);
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close(as_fd);
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printf("\n");
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}
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(void) closedir(procdir);
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return (0);
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}
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/*----------------------------------------------------------------------------*/
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void usage() {
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printf("%s: Help output\n\n", szProg);
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printf("If this program is given any arguments, this help is displayed.\n");
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printf("This command is used to print out the full command line for all\n");
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printf("running processes because /usr/bin/ps is limited to 80 chars and\n");
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printf("/usr/ucb/ps can merge columns together.\n\n");
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printf("Columns are:\n");
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printf("\tS - State of process - see 'ps' man page\n");
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printf("\tUID - UID of the process owner\n");
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printf("\tPID - PID of the process\n");
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printf("\tPPID - PID of the parent process\n");
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printf("\tVSZ - Virtual memory usage (kilobytes)\n");
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printf("\tRSS - Real memory usage (kilobytes)\n");
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printf("\t%%CPU - CPU usage\n");
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printf("\tCOMMAND - Command being run\n");
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printf("\tARGS - Full command line with arguements\n");
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return;
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}
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