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nvmutil: print usage 

Signed-off-by: Riku Viitanen <riku.viitanen@protonmail.com>
btrfsvols
Riku Viitanen 2023-11-06 13:00:05 +02:00
parent f12f5c3aee
commit 866087211f
1 changed files with 10 additions and 1 deletions
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11
util/nvmutil/nvmutil.c
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@ -1,5 +1,6 @@
/* SPDX-License-Identifier: MIT */
/* SPDX-FileCopyrightText: 2022, 2023 Leah Rowe <leah@libreboot.org> */
/* SPDX-FileCopyrightText: 2023 Riku Viitanen <riku.viitanen@protonmail.com> */
#include <sys/stat.h>
@ -61,8 +62,16 @@ void (*cmd)(void) = NULL;
int
main(int argc, char *argv[])
{
if (argc < 3)
if (argc < 3) {
fprintf(stderr, "USAGE:\n");
fprintf(stderr, " %s FILE dump\n", argv[0]);
fprintf(stderr, " %s FILE setmac [MAC]\n", argv[0]);
fprintf(stderr, " %s FILE swap\n", argv[0]);
fprintf(stderr, " %s FILE copy 0|1\n", argv[0]);
fprintf(stderr, " %s FILE brick 0|1\n", argv[0]);
fprintf(stderr, " %s FILE setchecksum 0|1\n", argv[0]);
err(errno = ECANCELED, "Too few arguments");
}
flags = (strcmp(COMMAND, "dump") == 0) ? O_RDONLY : flags;
filename = argv[1];
#ifdef __OpenBSD__