/* * pmap implementation for busybox * * Copyright (C) 2010 Nokia Corporation. All rights reserved. * Written by Alexander Shishkin <virtuoso@slind.org> * * Licensed under GPLv2 or later, see the LICENSE file in this source tree * for details. */ //config:config PMAP //config: bool "pmap (6 kb)" //config: default y //config: help //config: Display processes' memory mappings. //applet:IF_PMAP(APPLET(pmap, BB_DIR_USR_BIN, BB_SUID_DROP)) //kbuild:lib-$(CONFIG_PMAP) += pmap.o //usage:#define pmap_trivial_usage //usage: "[-xq] PID..." //usage:#define pmap_full_usage "\n\n" //usage: "Display process memory usage" //usage: "\n" //usage: "\n -x Show details" //usage: "\n -q Quiet" #include "libbb.h" #if ULONG_MAX == 0xffffffff # define TABS "\t" # define AFMT "8" # define DASHES "" #else # define TABS "\t\t" # define AFMT "16" # define DASHES "--------" #endif enum { OPT_x = 1 << 0, OPT_q = 1 << 1, }; static void print_smaprec(struct smaprec *currec, void *data) { unsigned opt = (uintptr_t)data; printf("%0" AFMT "lx ", currec->smap_start); if (opt & OPT_x) printf("%7lu %7lu %7lu %7lu ", currec->smap_size, currec->smap_pss, currec->private_dirty, currec->smap_swap); else printf("%7luK", currec->smap_size); printf(" %.4s %s\n", currec->smap_mode, currec->smap_name); } static int procps_get_maps(pid_t pid, unsigned opt) { struct smaprec total; int ret; char buf[256]; read_cmdline(buf, sizeof(buf), pid, NULL); printf("%u: %s\n", (int)pid, buf); if (!(opt & OPT_q) && (opt & OPT_x)) puts("Address" TABS " Kbytes PSS Dirty Swap Mode Mapping"); memset(&total, 0, sizeof(total)); ret = procps_read_smaps(pid, &total, print_smaprec, (void*)(uintptr_t)opt); if (ret) return ret; if (!(opt & OPT_q)) { if (opt & OPT_x) printf("--------" DASHES " ------ ------ ------ ------\n" "total" TABS " %7lu %7lu %7lu %7lu\n", total.smap_size, total.smap_pss, total.private_dirty, total.smap_swap); else printf("mapped: %luK\n", total.smap_size); } return 0; } int pmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int pmap_main(int argc UNUSED_PARAM, char **argv) { unsigned opts; int ret; opts = getopt32(argv, "^" "xq" "\0" "-1"); /* min one arg */ argv += optind; ret = 0; while (*argv) { pid_t pid = xatoi_positive(*argv++); /* GNU pmap returns 42 if any of the pids failed */ if (procps_get_maps(pid, opts) != 0) ret = 42; } return ret; }