512 lines
13 KiB
C
512 lines
13 KiB
C
/*
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* pmap.c - print process memory mapping
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* Copyright 2002 Albert Cahalan
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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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 <sys/ipc.h>
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#include <sys/shm.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "c.h"
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#include "nls.h"
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#include "proc/escape.h"
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#include "xalloc.h"
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#include "proc/readproc.h"
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#include "proc/version.h"
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static void __attribute__ ((__noreturn__))
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usage(FILE * out)
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{
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fputs(USAGE_HEADER, out);
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fprintf(out,
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_(" %s [options] pid [pid ...]\n"), program_invocation_short_name);
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fputs(USAGE_OPTIONS, out);
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fputs(_(" -x, --extended show details\n"
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" -d, --device show the device format\n"
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" -q, --quiet do not display header and footer\n"
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" -A, --range=<low>[,<high>] limit results to the given range\n"), out);
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fputs(USAGE_SEPARATOR, out);
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fputs(USAGE_HELP, out);
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fputs(USAGE_VERSION, out);
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fprintf(out, USAGE_MAN_TAIL("pmap(1)"));
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exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
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}
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static unsigned KLONG range_low;
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static unsigned KLONG range_high = ~0ull;
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static int d_option;
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static int q_option;
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static int x_option;
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static unsigned shm_minor = ~0u;
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static void discover_shm_minor(void)
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{
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void *addr;
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int shmid;
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char mapbuf[256];
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if (!freopen("/proc/self/maps", "r", stdin))
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return;
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/* create */
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shmid = shmget(IPC_PRIVATE, 42, IPC_CREAT | 0666);
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if (shmid == -1)
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/* failed; oh well */
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return;
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/* attach */
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addr = shmat(shmid, NULL, SHM_RDONLY);
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if (addr == (void *)-1)
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goto out_destroy;
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while (fgets(mapbuf, sizeof mapbuf, stdin)) {
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char flags[32];
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/* to clean up unprintables */
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char *tmp;
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unsigned KLONG start, end;
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unsigned long long file_offset, inode;
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unsigned dev_major, dev_minor;
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sscanf(mapbuf, "%" KLF "x-%" KLF "x %31s %llx %x:%x %llu", &start,
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&end, flags, &file_offset, &dev_major, &dev_minor,
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&inode);
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tmp = strchr(mapbuf, '\n');
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if (tmp)
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*tmp = '\0';
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tmp = mapbuf;
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while (*tmp) {
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if (!isprint(*tmp))
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*tmp = '?';
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tmp++;
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}
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if (start > (unsigned long)addr)
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continue;
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if (dev_major)
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continue;
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if (flags[3] != 's')
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continue;
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if (strstr(mapbuf, "/SYSV")) {
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shm_minor = dev_minor;
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break;
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}
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}
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if (shmdt(addr))
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perror(_("shared memory detach"));
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out_destroy:
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if (shmctl(shmid, IPC_RMID, NULL))
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perror(_("shared memory remove"));
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return;
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}
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static char *mapping_name(proc_t * p, unsigned KLONG addr,
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unsigned KLONG len, const char *mapbuf,
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unsigned showpath, unsigned dev_major,
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unsigned dev_minor, unsigned long long inode)
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{
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char *cp;
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if (!dev_major && dev_minor == shm_minor && strstr(mapbuf, "/SYSV")) {
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static char shmbuf[64];
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snprintf(shmbuf, sizeof shmbuf, " [ shmid=0x%llx ]", inode);
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return shmbuf;
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}
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cp = strrchr(mapbuf, '/');
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if (cp) {
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if (showpath)
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return strchr(mapbuf, '/');
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return cp[1] ? cp + 1 : cp;
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}
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cp = strchr(mapbuf, '/');
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if (cp) {
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if (showpath)
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return cp;
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/* it WILL succeed */
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return strrchr(cp, '/') + 1;
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}
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cp = _(" [ anon ]");
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if ((p->start_stack >= addr) && (p->start_stack <= addr + len))
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cp = _(" [ stack ]");
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return cp;
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}
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static int one_proc(proc_t * p)
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{
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char buf[32];
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char mapbuf[9600];
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char cmdbuf[512];
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FILE *fp;
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unsigned long total_shared = 0ul;
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unsigned long total_private_readonly = 0ul;
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unsigned long total_private_writeable = 0ul;
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KLONG diff = 0;
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const char *cp2 = NULL;
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unsigned long long rss = 0ull;
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unsigned long long private_dirty = 0ull;
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unsigned long long shared_dirty = 0ull;
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unsigned long long total_rss = 0ull;
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unsigned long long total_private_dirty = 0ull;
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unsigned long long total_shared_dirty = 0ull;
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/* Overkill, but who knows what is proper? The "w" prog uses
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* the tty width to determine this.
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*/
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int maxcmd = 0xfffff;
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sprintf(buf, "/proc/%u/maps", p->tgid);
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if ((fp = fopen(buf, "r")) == NULL)
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return 1;
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if (x_option) {
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sprintf(buf, "/proc/%u/smaps", p->tgid);
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if ((fp = freopen(buf, "r", fp)) == NULL)
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return 1;
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}
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escape_command(cmdbuf, p, sizeof cmdbuf, &maxcmd,
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ESC_ARGS | ESC_BRACKETS);
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printf("%u: %s\n", p->tgid, cmdbuf);
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if (!q_option && (x_option | d_option)) {
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if (x_option) {
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if (sizeof(KLONG) == 4)
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/* Translation Hint: Please keep
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* alignment of the following four
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* headers intact. */
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printf
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(_("Address Kbytes RSS Dirty Mode Mapping\n"));
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else
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printf
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(_("Address Kbytes RSS Dirty Mode Mapping\n"));
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}
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if (d_option) {
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if (sizeof(KLONG) == 4)
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printf
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(_("Address Kbytes Mode Offset Device Mapping\n"));
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else
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printf
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(_("Address Kbytes Mode Offset Device Mapping\n"));
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}
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}
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while (fgets(mapbuf, sizeof mapbuf, fp)) {
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char flags[32];
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/* to clean up unprintables */
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char *tmp;
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unsigned KLONG start, end;
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unsigned long long file_offset, inode;
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unsigned dev_major, dev_minor;
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unsigned long long smap_value;
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char smap_key[20];
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/* hex values are lower case or numeric, keys are upper */
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if (mapbuf[0] >= 'A' && mapbuf[0] <= 'Z') {
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/* Its a key */
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if (sscanf
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(mapbuf, "%20[^:]: %llu", smap_key,
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&smap_value) == 2) {
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if (strncmp("Rss", smap_key, 3) == 0) {
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rss = smap_value;
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total_rss += smap_value;
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continue;
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}
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if (strncmp("Shared_Dirty", smap_key, 12) == 0) {
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shared_dirty = smap_value;
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total_shared_dirty += smap_value;
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continue;
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}
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if (strncmp("Private_Dirty", smap_key, 13) == 0) {
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private_dirty = smap_value;
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total_private_dirty += smap_value;
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continue;
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}
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if (strncmp("Swap", smap_key, 4) == 0) {
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/*doesnt matter as long as last */
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printf((sizeof(KLONG) == 8)
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? "%016" KLF
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"x %7lu %7llu %7llu %s %s\n" :
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"%08lx %7lu %7llu %7llu %s %s\n",
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start,
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(unsigned long)(diff >> 10), rss,
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(private_dirty + shared_dirty),
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flags, cp2);
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/* reset some counters */
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rss = shared_dirty = private_dirty =
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0ull;
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diff = 0;
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continue;
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}
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/* Other keys */
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continue;
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}
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}
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sscanf(mapbuf, "%" KLF "x-%" KLF "x %31s %llx %x:%x %llu", &start,
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&end, flags, &file_offset, &dev_major, &dev_minor,
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&inode);
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if (start > range_high)
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break;
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if (end < range_low)
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continue;
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tmp = strchr(mapbuf, '\n');
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if (tmp)
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*tmp = '\0';
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tmp = mapbuf;
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while (*tmp) {
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if (!isprint(*tmp))
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*tmp = '?';
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tmp++;
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}
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diff = end - start;
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if (flags[3] == 's')
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total_shared += diff;
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if (flags[3] == 'p') {
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flags[3] = '-';
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if (flags[1] == 'w')
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total_private_writeable += diff;
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else
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total_private_readonly += diff;
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}
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/* format used by Solaris 9 and procps-3.2.0+ an 'R'
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* if swap not reserved (MAP_NORESERVE, SysV ISM
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* shared mem, etc.)
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*/
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flags[4] = '-';
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flags[5] = '\0';
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if (x_option) {
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cp2 =
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mapping_name(p, start, diff, mapbuf, 0, dev_major,
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dev_minor, inode);
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/* printed with the keys */
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continue;
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}
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if (d_option) {
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const char *cp =
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mapping_name(p, start, diff, mapbuf, 0, dev_major,
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dev_minor, inode);
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printf((sizeof(KLONG) == 8)
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? "%016" KLF "x %7lu %s %016llx %03x:%05x %s\n"
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: "%08lx %7lu %s %016llx %03x:%05x %s\n",
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start,
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(unsigned long)(diff >> 10),
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flags, file_offset, dev_major, dev_minor, cp);
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}
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if (!x_option && !d_option) {
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const char *cp =
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mapping_name(p, start, diff, mapbuf, 1, dev_major,
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dev_minor, inode);
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printf((sizeof(KLONG) == 8)
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? "%016" KLF "x %6luK %s %s\n"
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: "%08lx %6luK %s %s\n",
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start, (unsigned long)(diff >> 10), flags, cp);
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}
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}
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if (!q_option) {
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if (x_option) {
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if (sizeof(KLONG) == 8) {
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printf
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("---------------- ------ ------ ------\n");
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printf(_("total kB %15ld %7llu %7llu\n"),
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(total_shared + total_private_writeable +
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total_private_readonly) >> 10,
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total_rss,
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(total_shared_dirty +
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total_private_dirty)
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);
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} else {
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printf
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("-------- ------- ------- ------- -------\n");
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printf
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(_("total kB %7ld - - -\n"),
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(total_shared + total_private_writeable +
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total_private_readonly) >> 10);
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}
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}
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if (d_option) {
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printf
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(_("mapped: %ldK writeable/private: %ldK shared: %ldK\n"),
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(total_shared + total_private_writeable +
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total_private_readonly) >> 10,
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total_private_writeable >> 10, total_shared >> 10);
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}
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if (!x_option && !d_option) {
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if (sizeof(KLONG) == 8)
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/* Translation Hint: keep total string length
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* as 24 characters. Adjust %16 if needed*/
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printf(_(" total %16ldK\n"),
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(total_shared + total_private_writeable +
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total_private_readonly) >> 10);
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else
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/* Translation Hint: keep total string length
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* as 16 characters. Adjust %8 if needed*/
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printf(_(" total %8ldK\n"),
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(total_shared + total_private_writeable +
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total_private_readonly) >> 10);
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}
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}
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return 0;
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}
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int main(int argc, char **argv)
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{
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unsigned *pidlist;
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unsigned count = 0;
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PROCTAB *PT;
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proc_t p;
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int ret = 0, c;
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static const struct option longopts[] = {
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{"extended", no_argument, NULL, 'x'},
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{"device", no_argument, NULL, 'd'},
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{"quiet", no_argument, NULL, 'q'},
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{"range", required_argument, NULL, 'A'},
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{"help", no_argument, NULL, 'h'},
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{"version", no_argument, NULL, 'V'},
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{NULL, 0, NULL, 0}
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};
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program_invocation_name = program_invocation_short_name;
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setlocale (LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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x_option = d_option = q_option = 0;
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while ((c = getopt_long(argc, argv, "xrdqA:hV", longopts, NULL)) != -1)
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switch (c) {
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case 'x':
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x_option = 1;
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break;
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case 'r':
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xwarnx(_("option -r is ignored as SunOS compatibility"));
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break;
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case 'd':
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d_option = 1;
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break;
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case 'q':
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q_option = 1;
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break;
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case 'A':
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{
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/* FIXME: this should be a function. */
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char *walk = optarg;
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char *arg1;
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char *arg2;
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if (walk[1]) {
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arg1 = walk + 1;
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walk += strlen(walk) - 1;
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} else {
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arg1 = *++argv;
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if (!arg1)
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usage(stderr);
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}
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arg2 = strchr(arg1, ',');
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if (arg2)
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*arg2 = '\0';
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if(arg2) ++arg2;
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else arg2 = arg1;
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if (arg1 && *arg1)
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range_low = STRTOUKL(arg1, &arg1, 16);
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if (*arg2)
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range_high = STRTOUKL(arg2, &arg2, 16);
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if (arg1 && (*arg1 || *arg2))
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usage(stderr);
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}
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break;
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case 'h':
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usage(stdout);
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case 'V':
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printf(PROCPS_NG_VERSION);
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return EXIT_SUCCESS;
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case 'a': /* Sun prints anon/swap reservations */
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case 'F': /* Sun forces hostile ptrace-like grab */
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case 'l': /* Sun shows unresolved dynamic names */
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case 'L': /* Sun shows lgroup info */
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case 's': /* Sun shows page sizes */
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case 'S': /* Sun shows swap reservations */
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default:
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usage(stderr);
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}
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argc -= optind;
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argv += optind;
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if (argc < 1)
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xerrx(EXIT_FAILURE, _("argument missing"));
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if (d_option && x_option)
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xerrx(EXIT_FAILURE, _("options -d and -x cannot coexist"));
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pidlist = xmalloc(sizeof(unsigned) * argc);
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while (*argv) {
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char *walk = *argv++;
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char *endp;
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unsigned long pid;
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if (!strncmp("/proc/", walk, 6)) {
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walk += 6;
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/* user allowed to do: pmap /proc/PID */
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if (*walk < '0' || *walk > '9')
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continue;
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}
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if (*walk < '0' || *walk > '9')
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usage(stderr);
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pid = strtoul(walk, &endp, 0);
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if (pid < 1ul || pid > 0x7ffffffful || *endp)
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usage(stderr);
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pidlist[count++] = pid;
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}
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discover_shm_minor();
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memset(&p, '\0', sizeof(p));
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/* old libproc interface is zero-terminated */
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pidlist[count] = 0;
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PT = openproc(PROC_FILLSTAT | PROC_FILLARG | PROC_PID, pidlist);
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while (readproc(PT, &p)) {
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ret |= one_proc(&p);
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count--;
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}
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closeproc(PT);
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if (count)
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/* didn't find all processes asked for */
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ret |= 42;
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return ret;
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}
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