blob: aa221cfb89530971d740a9705daa55f8145ada3b
1 | /* |
2 | * pmap implementation for busybox |
3 | * |
4 | * Copyright (C) 2010 Nokia Corporation. All rights reserved. |
5 | * Written by Alexander Shishkin <virtuoso@slind.org> |
6 | * |
7 | * Licensed under GPLv2 or later, see the LICENSE file in this source tree |
8 | * for details. |
9 | */ |
10 | |
11 | //config:config PMAP |
12 | //config: bool "pmap" |
13 | //config: default y |
14 | //config: help |
15 | //config: Display processes' memory mappings. |
16 | |
17 | //applet:IF_PMAP(APPLET(pmap, BB_DIR_USR_BIN, BB_SUID_DROP)) |
18 | //kbuild:lib-$(CONFIG_PMAP) += pmap.o |
19 | |
20 | //usage:#define pmap_trivial_usage |
21 | //usage: "[-xq] PID" |
22 | //usage:#define pmap_full_usage "\n\n" |
23 | //usage: "Display process memory usage" |
24 | //usage: "\n" |
25 | //usage: "\n -x Show details" |
26 | //usage: "\n -q Quiet" |
27 | |
28 | #include "libbb.h" |
29 | |
30 | #if ULONG_MAX == 0xffffffff |
31 | # define TABS "\t" |
32 | # define AFMT "8" |
33 | # define DASHES "" |
34 | #else |
35 | # define TABS "\t\t" |
36 | # define AFMT "16" |
37 | # define DASHES "--------" |
38 | #endif |
39 | |
40 | enum { |
41 | OPT_x = 1 << 0, |
42 | OPT_q = 1 << 1, |
43 | }; |
44 | |
45 | static void print_smaprec(struct smaprec *currec, void *data) |
46 | { |
47 | unsigned opt = (uintptr_t)data; |
48 | |
49 | printf("%0" AFMT "lx ", currec->smap_start); |
50 | |
51 | if (opt & OPT_x) |
52 | printf("%7lu %7lu %7lu %7lu ", |
53 | currec->smap_size, |
54 | currec->smap_pss, |
55 | currec->private_dirty, |
56 | currec->smap_swap); |
57 | else |
58 | printf("%7luK", currec->smap_size); |
59 | |
60 | printf(" %.4s %s\n", currec->smap_mode, currec->smap_name); |
61 | } |
62 | |
63 | static int procps_get_maps(pid_t pid, unsigned opt) |
64 | { |
65 | struct smaprec total; |
66 | int ret; |
67 | char buf[256]; |
68 | |
69 | read_cmdline(buf, sizeof(buf), pid, NULL); |
70 | printf("%u: %s\n", (int)pid, buf); |
71 | |
72 | if (!(opt & OPT_q) && (opt & OPT_x)) |
73 | puts("Address" TABS " Kbytes PSS Dirty Swap Mode Mapping"); |
74 | |
75 | memset(&total, 0, sizeof(total)); |
76 | |
77 | ret = procps_read_smaps(pid, &total, print_smaprec, (void*)(uintptr_t)opt); |
78 | if (ret) |
79 | return ret; |
80 | |
81 | if (!(opt & OPT_q)) { |
82 | if (opt & OPT_x) |
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); |
86 | else |
87 | printf("mapped: %luK\n", total.smap_size); |
88 | } |
89 | |
90 | return 0; |
91 | } |
92 | |
93 | int pmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
94 | int pmap_main(int argc UNUSED_PARAM, char **argv) |
95 | { |
96 | unsigned opts; |
97 | int ret; |
98 | |
99 | opts = getopt32(argv, "xq"); |
100 | argv += optind; |
101 | |
102 | ret = 0; |
103 | while (*argv) { |
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) |
107 | ret = 42; |
108 | } |
109 | |
110 | return ret; |
111 | } |
112 |