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84 lines
2.1 KiB
84 lines
2.1 KiB
4 months ago
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/*
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* Copyright (c) 1997,2008 Andrew G. Morgan <morgan@kernel.org>
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*
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* This displays the capabilities of given target process(es).
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*/
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#include <sys/types.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/capability.h>
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static void usage(int code)
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{
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fprintf(stderr,
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"usage: getcaps <pid> [<pid> ...]\n\n"
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" This program displays the capabilities on the queried process(es).\n"
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" The capabilities are displayed in the cap_from_text(3) format.\n"
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"\n"
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" Optional arguments:\n"
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" --help, -h or --usage display this message.\n"
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" --verbose use a more verbose output format.\n"
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" --ugly or --legacy use the archaic legacy output format.\n"
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" --license display license info\n");
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exit(code);
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}
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int main(int argc, char **argv)
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{
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int retval = 0;
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int verbose = 0;
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if (argc < 2) {
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usage(1);
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}
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for ( ++argv; --argc > 0; ++argv ) {
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ssize_t length;
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int pid;
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cap_t cap_d;
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if (!strcmp(argv[0], "--help") || !strcmp(argv[0], "--usage") ||
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!strcmp(argv[0], "-h")) {
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usage(0);
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} else if (!strcmp(argv[0], "--license")) {
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printf("%s has a you choose license: BSD 3-clause or GPL2\n"
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"[Copyright (c) 1997-8,2007,2019 Andrew G. Morgan <morgan@kernel.org>]\n",
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argv[0]);
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exit(0);
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} else if (!strcmp(argv[0], "--verbose")) {
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verbose = 1;
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continue;
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} else if (!strcmp(argv[0], "--ugly") || !strcmp(argv[0], "--legacy")) {
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verbose = 2;
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continue;
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}
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pid = atoi(argv[0]);
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cap_d = cap_get_pid(pid);
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if (cap_d == NULL) {
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fprintf(stderr, "Failed to get cap's for process %d:"
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" (%s)\n", pid, strerror(errno));
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retval = 1;
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continue;
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} else {
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char *result = cap_to_text(cap_d, &length);
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if (verbose == 1) {
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printf("Capabilities for '%s': %s\n", *argv, result);
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} else if (verbose == 2) {
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fprintf(stderr, "Capabilities for `%s': %s\n", *argv, result);
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} else {
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printf("%s: %s\n", *argv, result);
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}
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cap_free(result);
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result = NULL;
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cap_free(cap_d);
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}
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}
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return retval;
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}
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