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-rw-r--r--plugins-root/pst3.c249
1 files changed, 109 insertions, 140 deletions
diff --git a/plugins-root/pst3.c b/plugins-root/pst3.c
index 5b0e9d72..ee1d180e 100644
--- a/plugins-root/pst3.c
+++ b/plugins-root/pst3.c
@@ -1,16 +1,36 @@
-/* pst3.c
+/*****************************************************************************
+*
+* pst3
+*
+* License: GPL
+* Copyright (c) 2008 Nagios Plugin Development Team
+*
+* Description:
+*
+* This file contains the pst3 executable. This is a replacement ps command
+* for Solaris to get output which provides a long argument listing, which
+* is not possible with the standard ps command (due to truncation). /usr/ucb/ps
+* also has issues where some fields run into each other.
+*
+* This executable works by reading the kernel memory structures, so needs
+* to be executed as root
*
-* Third version to get process arg info; this time by using
-* a combination of reading the /proc/<pid>/psinfo structures
-* and reading the complete arg vector from kernel memory structures.
-*
-* Developed and tested under Solaris 5.8 (both 32 and 64 bit modes).
-*
-* NOTE: This program must be setuid-root (or run by root) to work!
-*
-* Written: 2005-04-28 R.W.Ingraham
-*/
-
+* Originally written by R.W.Ingraham
+*
+* 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 3 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, see <http://www.gnu.org/licenses/>.
+*
+*****************************************************************************/
#define _KMEMUSER 1
@@ -37,6 +57,8 @@
#define PROC_DIR "/proc"
#define MAX_PATH 1024
+#define OK 0
+#define FAIL NULL
/*
@@ -59,12 +81,9 @@ static char ** myArgv;
* Prototypes
*/
-static int HandleFile (struct dirent *pDent);
-static int HandlePsInfo (char *szPath, psinfo_t *pPsInfo);
-static int GetArgVectors (pid_t pid);
-static void ShowArgVectors (void);
-static void ReleaseArgVectors();
-
+static int output_info(struct proc *proc_kvm, psinfo_t procinfo,char **proc_argv);
+static psinfo_t get_procinfo(struct proc *proc);
+static int HandleProc(struct proc *proc);
/*----------------------------------------------------------------------------*/
@@ -73,7 +92,8 @@ int main (int argc, char **argv)
DIR *pDir;
struct dirent *pDent;
int retcode = 0;
-
+ struct proc *proc;
+ struct pid pid;
/* Set our program name global */
if ((szProg = strrchr(argv[0], '/')) != NULL)
@@ -95,26 +115,28 @@ int main (int argc, char **argv)
exit(2);
}
- /* Open the /proc directory */
- if ((pDir = opendir(PROC_DIR)) != NULL)
- {
- /* Display column headings */
- printf("S UID PID PPID VSZ RSS %%CPU COMMAND ARGS\n");
-
- /* Zip through all of the process entries */
- while ((pDent = readdir(pDir)) != NULL)
- {
- /* Handle each pid sub-directory */
- HandleFile(pDent);
- }
-
- /* Close the directory */
- closedir(pDir);
- }
- else /* ERROR: Failure to open PROC_DIR */
- {
- fprintf(stderr, "%s: Failed to open \"%s\": %s\n", szProg, PROC_DIR, strerror(errno));
- retcode = 3;
+ /* reset to first proc in list */
+ if(kvm_setproc(kd) == -1) {
+ perror("kvm_setproc");
+ exit(2);
+ }
+
+ /* Display column headings */
+ printf("%c %5s %5s %5s %6s %6s %4s %s %s\n",
+ 'S',
+ "UID",
+ "PID",
+ "PPID",
+ "VSZ",
+ "RSS",
+ "%CPU",
+ "COMMAND",
+ "ARGS"
+ );
+
+ /* Zip through all of the process entries */
+ while((proc = kvm_nextproc(kd)) != 0) {
+ HandleProc(proc);
}
/* Close the handle to the running kernel image */
@@ -125,129 +147,76 @@ int main (int argc, char **argv)
/*----------------------------------------------------------------------------*/
-static int HandleFile (struct dirent *pDent)
+static int HandleProc(struct proc *proc)
{
- char szPath[MAX_PATH];
- psinfo_t sPsInfo;
- int fd, len;
- int rc = 0;
-
- /* Skip files beginning with a "." */
- if (pDent->d_name[0] == '.')
- return 0;
-
- /* Cosntruct the path to the psinfo file */
- len = sprintf(szPath, "%s/%s/psinfo", PROC_DIR, pDent->d_name);
-
- /* Open the psinfo file for this pid and print out its arg vectors */
- if ((fd = open(szPath, O_RDONLY)) >= 0)
- {
- /* Read the psinfo struct */
- if ((len = read(fd, &sPsInfo, sizeof(sPsInfo))) != sizeof(sPsInfo))
- {
- rc = errno;
- fprintf(stderr, "%s: Read error of psinfo structure (%d)\n", szPath, len);
- return rc;
- }
-
- /* Close the psinfo file */
- close(fd);
+ struct pid pid;
+ struct user *user;
+ psinfo_t procinfo;
+ char **proc_argv = 0;
- /* Pass psinfo struct to reporting function */
- HandlePsInfo(szPath, &sPsInfo);
- }
- else if (errno != ENOENT)
- {
- rc = errno;
- fprintf(stderr, "%s: %s\n", szPath, strerror(errno));
+ if(kvm_kread(kd, (unsigned long) proc->p_pidp, (char *) &pid, sizeof pid) == -1) {
+ perror("kvm_read error");
+ exit(2);
}
+ proc->p_pidp = &pid;
+ user = kvm_getu(kd, proc);
- return 0;
-}
-
-/*----------------------------------------------------------------------------*/
-
-static int HandlePsInfo (char *szPath, psinfo_t *pPsInfo)
-{
- int retcode;
- char *thisProg;
-
- /* Make sure that the process is still there */
- if ((retcode = GetArgVectors(pPsInfo->pr_pid)) == 0)
- {
- /* We use the program name from the kvm argv[0] instead
- * of pr_fname from the psinfo struct because pr_fname
- * may be truncated.
- *
- * Also, strip-off leading path information.
- */
- if ((thisProg = strrchr(myArgv[0], '/')) != NULL)
- thisProg++;
- else
- thisProg = myArgv[0];
-
- /* Display the ps columns (except for argv) */
- printf("%c %5d %5d %5d %6lu %6lu %4.1f %s ",
- pPsInfo->pr_lwp.pr_sname,
- (int)(pPsInfo->pr_euid),
- (int)(pPsInfo->pr_pid),
- (int)(pPsInfo->pr_ppid),
- (unsigned long)(pPsInfo->pr_size),
- (unsigned long)(pPsInfo->pr_rssize),
- ((float)(pPsInfo->pr_pctcpu) / 0x8000 * 100.0),
- thisProg);
-
- /* Display the arg vectors associated with this pid */
- ShowArgVectors();
-
- /* Release the arg vector buffer memory */
- ReleaseArgVectors();
+ if(kvm_getcmd(kd, proc, user, &proc_argv, NULL) == -1) {
+ return FAIL;
}
- return retcode;
+ procinfo = get_procinfo(proc);
+ return output_info(proc, procinfo, proc_argv);
}
-/*----------------------------------------------------------------------------*/
-
-static int GetArgVectors (pid_t pid)
+static psinfo_t get_procinfo(struct proc *proc)
{
- int retcode = 1;
+ char procpath[MAX_PATH];
+ psinfo_t procinfo;
+ int fd, len;
+
+ sprintf(procpath, "/proc/%d/psinfo", proc->p_pidp->pid_id);
- /* Get the proc structure for the specified PID */
- if ((pProc = kvm_getproc(kd, pid)) != NULL)
+ if ((fd = open(procpath, O_RDONLY)) >= 0)
{
- /* Save a copy of the process' u-area */
- if ((pUser = kvm_getu(kd, pProc)) != NULL)
+ if ((len = read(fd, &procinfo, sizeof(procinfo))) != sizeof(procinfo))
{
- /* Reconstruct the process' argv vector array */
- if (kvm_getcmd(kd, pProc, pUser, &myArgv, NULL) == 0)
- {
- retcode = 0;
- }
+ fprintf(stderr,"%s: Read error of psingo structure (%d)\n", procpath, len);
+ exit(2);
}
+ close(fd);
}
+ return procinfo;
- return retcode;
}
-/*----------------------------------------------------------------------------*/
-
-static void ShowArgVectors (void)
+static int output_info(struct proc *proc_kvm, psinfo_t procinfo, char **proc_argv)
{
+ char *procname;
int i;
- for (i=0; myArgv[i]; i++)
- {
- printf(" %s", myArgv[i]);
+ if((procname = strrchr(proc_argv[0], '/')) != NULL)
+ procname++;
+ else
+ procname = proc_argv[0];
+
+ printf("%c %5d %5d %5d %6lu %6lu %4.1f %s ",
+ procinfo.pr_lwp.pr_sname,
+ (int)(procinfo.pr_euid),
+ (int)proc_kvm->p_pidp->pid_id,
+ (int)proc_kvm->p_ppid,
+ (unsigned long)(procinfo.pr_size),
+ (unsigned long)(procinfo.pr_rssize),
+ ((float)(procinfo.pr_pctcpu) / 0x8000 * 100.0),
+ procname
+ );
+
+ for(i=0;proc_argv[i];i++) {
+ printf(" %s", proc_argv[i]);
}
- printf("\n");
-}
-/*----------------------------------------------------------------------------*/
+ printf("\n");
-static void ReleaseArgVectors()
-{
- /* NOOP */
+ return OK;
}
-/*----------------------------------------------------------------------------*/
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 17:20:09 +0000