[2725] | 1 | /*
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| 2 | * pmap implementation for busybox
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| 3 | *
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| 4 | * Copyright (C) 2010 Nokia Corporation. All rights reserved.
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| 5 | * Written by Alexander Shishkin <virtuoso@slind.org>
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| 6 | *
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| 7 | * Licensed under GPLv2 or later, see the LICENSE file in this source tree
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| 8 | * for details.
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| 9 | */
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| 10 |
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| 11 | //config:config PMAP
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| 12 | //config: bool "pmap"
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| 13 | //config: default y
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| 14 | //config: help
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| 15 | //config: Display processes' memory mappings.
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| 16 |
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[3232] | 17 | //applet:IF_PMAP(APPLET(pmap, BB_DIR_USR_BIN, BB_SUID_DROP))
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| 18 | //kbuild:lib-$(CONFIG_PMAP) += pmap.o
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| 19 |
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[2725] | 20 | //usage:#define pmap_trivial_usage
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[3232] | 21 | //usage: "[-xq] PID"
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[2725] | 22 | //usage:#define pmap_full_usage "\n\n"
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[3232] | 23 | //usage: "Display detailed process memory usage"
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| 24 | //usage: "\n"
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| 25 | //usage: "\n -x Show details"
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| 26 | //usage: "\n -q Quiet"
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[2725] | 27 |
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| 28 | #include "libbb.h"
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| 29 |
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| 30 | #if ULONG_MAX == 0xffffffff
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| 31 | # define TABS "\t"
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| 32 | # define AFMT "8"
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| 33 | # define DASHES ""
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| 34 | #else
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| 35 | # define TABS "\t\t"
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| 36 | # define AFMT "16"
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| 37 | # define DASHES "--------"
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| 38 | #endif
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| 39 |
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| 40 | enum {
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| 41 | OPT_x = 1 << 0,
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| 42 | OPT_q = 1 << 1,
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| 43 | };
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| 44 |
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| 45 | static void print_smaprec(struct smaprec *currec, void *data)
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| 46 | {
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| 47 | unsigned opt = (uintptr_t)data;
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| 48 |
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| 49 | printf("%0" AFMT "lx ", currec->smap_start);
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| 50 |
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| 51 | if (opt & OPT_x)
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| 52 | printf("%7lu %7lu %7lu %7lu ",
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| 53 | currec->smap_size,
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| 54 | currec->smap_pss,
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| 55 | currec->private_dirty,
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| 56 | currec->smap_swap);
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| 57 | else
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| 58 | printf("%7luK", currec->smap_size);
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| 59 |
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| 60 | printf(" %.4s %s\n", currec->smap_mode, currec->smap_name);
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| 61 | }
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| 62 |
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| 63 | static int procps_get_maps(pid_t pid, unsigned opt)
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| 64 | {
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| 65 | struct smaprec total;
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| 66 | int ret;
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| 67 | char buf[256];
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| 68 |
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| 69 | read_cmdline(buf, sizeof(buf), pid, "no such process");
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| 70 | printf("%u: %s\n", (int)pid, buf);
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| 71 |
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| 72 | if (!(opt & OPT_q) && (opt & OPT_x))
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| 73 | puts("Address" TABS " Kbytes PSS Dirty Swap Mode Mapping");
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| 74 |
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| 75 | memset(&total, 0, sizeof(total));
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| 76 |
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| 77 | ret = procps_read_smaps(pid, &total, print_smaprec, (void*)(uintptr_t)opt);
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| 78 | if (ret)
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| 79 | return ret;
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| 80 |
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| 81 | if (!(opt & OPT_q)) {
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| 82 | if (opt & OPT_x)
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| 83 | printf("--------" DASHES " ------ ------ ------ ------\n"
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| 84 | "total" TABS " %7lu %7lu %7lu %7lu\n",
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| 85 | total.smap_size, total.smap_pss, total.private_dirty, total.smap_swap);
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| 86 | else
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| 87 | printf("mapped: %luK\n", total.smap_size);
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| 88 | }
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| 89 |
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| 90 | return 0;
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| 91 | }
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| 92 |
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| 93 | int pmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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| 94 | int pmap_main(int argc UNUSED_PARAM, char **argv)
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| 95 | {
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| 96 | unsigned opts;
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| 97 | int ret;
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| 98 |
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| 99 | opts = getopt32(argv, "xq");
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| 100 | argv += optind;
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| 101 |
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| 102 | ret = 0;
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| 103 | while (*argv) {
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| 104 | pid_t pid = xatoi_positive(*argv++);
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| 105 | /* GNU pmap returns 42 if any of the pids failed */
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| 106 | if (procps_get_maps(pid, opts) != 0)
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| 107 | ret = 42;
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| 108 | }
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| 109 |
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| 110 | return ret;
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| 111 | }
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