From a40f10bcae68caf6fd00379c06f92f34ba5c8d07 Mon Sep 17 00:00:00 2001 From: Jerry Hoemann Date: Tue, 3 Jul 2018 09:55:57 +0200 Subject: dmidecode: Add option to filter output based upon handle Add option "--handle HANDLE" to dmiopt to allow user to filter output to only those entry that matches HANDLE. Signed-off-by: Jerry Hoemann Signed-off-by: Jean Delvare --- dmiopt.c | 26 +++++++++++++++++++++++--- 1 file changed, 23 insertions(+), 3 deletions(-) (limited to 'dmiopt.c') diff --git a/dmiopt.c b/dmiopt.c index a36cf16..1531ddf 100644 --- a/dmiopt.c +++ b/dmiopt.c @@ -240,6 +240,19 @@ done: return 0; } +static u32 parse_opt_handle(const char *arg) +{ + u32 val; + char *next; + + val = strtoul(arg, &next, 0); + if (next == arg || *next != '\0' || val > 0xffff) + { + fprintf(stderr, "Invalid handle number: %s\n", arg); + return ~0; + } + return val; +} /* * Command line options handling @@ -249,7 +262,7 @@ done: int parse_command_line(int argc, char * const argv[]) { int option; - const char *optstring = "d:hqs:t:uV"; + const char *optstring = "d:hqs:t:uH:V"; struct option longopts[] = { { "dev-mem", required_argument, NULL, 'd' }, { "help", no_argument, NULL, 'h' }, @@ -259,6 +272,7 @@ int parse_command_line(int argc, char * const argv[]) { "dump", no_argument, NULL, 'u' }, { "dump-bin", required_argument, NULL, 'B' }, { "from-dump", required_argument, NULL, 'F' }, + { "handle", required_argument, NULL, 'H' }, { "oem-string", required_argument, NULL, 'O' }, { "no-sysfs", no_argument, NULL, 'S' }, { "version", no_argument, NULL, 'V' }, @@ -300,6 +314,11 @@ int parse_command_line(int argc, char * const argv[]) if (opt.type == NULL) return -1; break; + case 'H': + opt.handle = parse_opt_handle(optarg); + if (opt.handle == ~0U) + return -1; + break; case 'u': opt.flags |= FLAG_DUMP; break; @@ -326,9 +345,9 @@ int parse_command_line(int argc, char * const argv[]) /* Check for mutually exclusive output format options */ if ((opt.string != NULL) + (opt.type != NULL) - + !!(opt.flags & FLAG_DUMP_BIN) > 1) + + !!(opt.flags & FLAG_DUMP_BIN) + (opt.handle != ~0U) > 1) { - fprintf(stderr, "Options --string, --type and --dump-bin are mutually exclusive\n"); + fprintf(stderr, "Options --string, --type, --handle and --dump-bin are mutually exclusive\n"); return -1; } @@ -351,6 +370,7 @@ void print_help(void) " -q, --quiet Less verbose output\n" " -s, --string KEYWORD Only display the value of the given DMI string\n" " -t, --type TYPE Only display the entries of given type\n" + " -H, --handle HANDLE Only display the entry of given handle\n" " -u, --dump Do not decode the entries\n" " --dump-bin FILE Dump the DMI data to a binary file\n" " --from-dump FILE Read the DMI data from a binary file\n" -- cgit v1.2.1