2 * pmap implementation for busybox
4 * Copyright (C) 2010 Nokia Corporation. All rights reserved.
5 * Written by Alexander Shishkin <virtuoso@slind.org>
7 * Licensed under GPLv2 or later, see the LICENSE file in this source tree
11 //applet:IF_PMAP(APPLET(pmap, _BB_DIR_USR_BIN, _BB_SUID_DROP))
12 //kbuild:lib-$(CONFIG_PMAP) += pmap.o
18 //config: Display processes' memory mappings.
20 //usage:#define pmap_trivial_usage
21 //usage: "[-x][-q] PID"
22 //usage:#define pmap_full_usage "\n\n"
23 //usage: "Display detailed precesses' memory usage\n"
25 //usage: "\n -x show details"
26 //usage: "\n -q quiet"
30 #if ULONG_MAX == 0xffffffff
37 # define DASHES "--------"
45 static void print_smaprec(struct smaprec *currec, void *data)
47 unsigned opt = (uintptr_t)data;
49 printf("%0" AFMT "lx ", currec->smap_start);
52 printf("%7lu %7lu %7lu %7lu ",
55 currec->private_dirty,
58 printf("%7luK", currec->smap_size);
60 printf(" %.4s %s\n", currec->smap_mode, currec->smap_name);
63 static int procps_get_maps(pid_t pid, unsigned opt)
69 read_cmdline(buf, sizeof(buf), pid, "no such process");
70 printf("%u: %s\n", (int)pid, buf);
72 if (!(opt & OPT_q) && (opt & OPT_x))
73 puts("Address" TABS " Kbytes PSS Dirty Swap Mode Mapping");
75 memset(&total, 0, sizeof(total));
77 ret = procps_read_smaps(pid, &total, print_smaprec, (void*)(uintptr_t)opt);
83 printf("--------" DASHES " ------ ------ ------ ------\n"
84 "total" TABS " %7lu %7lu %7lu %7lu\n",
85 total.smap_size, total.smap_pss, total.private_dirty, total.smap_swap);
87 printf("mapped: %luK\n", total.smap_size);
93 int pmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
94 int pmap_main(int argc UNUSED_PARAM, char **argv)
99 opts = getopt32(argv, "xq");
104 pid_t pid = xatoi_positive(*argv++);
105 /* GNU pmap returns 42 if any of the pids failed */
106 if (procps_get_maps(pid, opts) != 0)