rtld: Add -v switch to print some useful information about the rtld binary.
Sponsored by: The FreeBSD Foundation MFC after: 1 week
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08bc040214
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=361675
@ -333,6 +333,8 @@ character,
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uses the search path provided by the environment variable
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.Dv PATH
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to find the binary to execute.
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.It Fl v
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Display information about this run-time linker binary, then exit.
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.It Fl -
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Ends the
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.Nm
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@ -5613,7 +5613,9 @@ static int
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parse_args(char* argv[], int argc, bool *use_pathp, int *fdp)
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{
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const char *arg;
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int fd, i, j, arglen;
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char machine[64];
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size_t sz;
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int arglen, fd, i, j, mib[2];
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char opt;
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dbg("Parsing command-line arguments");
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@ -5672,6 +5674,24 @@ parse_args(char* argv[], int argc, bool *use_pathp, int *fdp)
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break;
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} else if (opt == 'p') {
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*use_pathp = true;
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} else if (opt == 'v') {
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machine[0] = '\0';
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mib[0] = CTL_HW;
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mib[1] = HW_MACHINE;
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sz = sizeof(machine);
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sysctl(mib, nitems(mib), machine, &sz, NULL, 0);
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rtld_printf(
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"FreeBSD ld-elf.so.1 %s\n"
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"FreeBSD_version %d\n"
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"Default lib path %s\n"
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"Env prefix %s\n"
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"Hint file %s\n"
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"libmap file %s\n",
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machine,
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__FreeBSD_version, ld_standard_library_path,
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ld_env_prefix, ld_elf_hints_default,
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ld_path_libmap_conf);
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_exit(0);
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} else {
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_rtld_error("Invalid argument: '%s'", arg);
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print_usage(argv[0]);
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@ -5720,6 +5740,7 @@ print_usage(const char *argv0)
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" -h Display this help message\n"
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" -f <FD> Execute <FD> instead of searching for <binary>\n"
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" -p Search in PATH for named binary\n"
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" -v Display identification information\n"
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" -- End of RTLD options\n"
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" <binary> Name of process to execute\n"
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" <args> Arguments to the executed process\n", argv0);
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