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examples/nvme/identify: clean up arguments

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- Make the usage columns line up
- Fix the wording of the usage messages
- Fix the getopt() string for -x, which has no argument
- Use the default discovery NQN if none specified
- Use the nvmf_spec.h #define for max NQN length

Change-Id: I88608ead57d1bee46738ba05dc2074230d22be0d
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Daniel Verkamp 2016-11-18 16:12:33 -07:00
parent 1910c552f7
commit b3e46acfe9
1 changed files with 12 additions and 10 deletions
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22
examples/nvme/identify/identify.c
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@ -45,6 +45,7 @@
#include "spdk/nvme.h"
#include "spdk/env.h"
#include "spdk/nvme_intel.h"
#include "spdk/nvmf_spec.h"
#include "spdk/pci_ids.h"
static int outstanding_commands;
@ -849,16 +850,16 @@ usage(const char *program_name)
{
printf("%s [options]", program_name);
printf("\n");
printf("\t-x print hex dump of raw data\n");
printf("options:\n");
printf("\t-a addr address for nvmf target\n");
printf("\t-s service service id for nvmf target\n");
printf("\t-n nqn nqn for nvmf target\n");
printf(" -a addr address of NVMe over Fabrics discovery service\n");
printf(" -s service service ID for NVMe over Fabrics discovery service\n");
printf(" -n nqn NQN of NVMe over Fabrics discovery service\n");
spdk_tracelog_usage(stdout, "-t");
printf("\t-v - verbose (enable warnings)\n");
printf("\t-H - show this usage\n");
printf(" -x print hex dump of raw data\n");
printf(" -v verbose (enable warnings)\n");
printf(" -H show this usage\n");
}
static int
@ -866,7 +867,9 @@ parse_args(int argc, char **argv)
{
int op, rc;
while ((op = getopt(argc, argv, "a:n:s:t:x:H")) != -1) {
info.nqn = SPDK_NVMF_DISCOVERY_NQN;
while ((op = getopt(argc, argv, "a:n:s:t:xH")) != -1) {
switch (op) {
case 'x':
g_hex_dump = true;
@ -910,8 +913,8 @@ parse_args(int argc, char **argv)
return 0;
}
if ((strlen(info.nqn) > 223)) {
printf("The string len of nqn should <= 223\n");
if (strlen(info.nqn) >= SPDK_NVMF_NQN_MAX_LEN) {
printf("NQN must be less than %d bytes long\n", SPDK_NVMF_NQN_MAX_LEN);
return 0;
}
@ -950,7 +953,6 @@ int main(int argc, char **argv)
rc = parse_args(argc, argv);
if (rc != 0) {
printf("parse_args error\n");
return rc;
}