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util/nvmutil: use strncmp instead of strcmp

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set a constant maximum length. this seems reasonable,
and it's even quite generous.

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-03 19:18:47 +00:00
parent bf081914a3
commit d88991f6bc
1 changed files with 3 additions and 2 deletions
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util/nvmutil/nvmutil.c
+3 -2
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@@ -69,6 +69,7 @@ static int fd;
static int part;
static int invert;
static int part_modified[2];
static int max_cmd_length = 50;
static const char *mac = NULL;
static const char *rmac = "xx:xx:xx:xx:xx:xx";
@@ -145,7 +146,7 @@ set_cmd(int argc, char *argv[])
arg_cmd = argv[2];
for (i = 0; (i < items(ops)) && (cmd == NULL); i++) {
if (strcmp(arg_cmd, ops[i].str) != 0)
if (strncmp(arg_cmd, ops[i].str, max_cmd_length) != 0)
continue;
if (argc >= ops[i].args) {
cmd = ops[i].cmd;
@@ -185,7 +186,7 @@ set_io_flags(int argc, char *argv[])
flags = O_RDWR;
if (argc > 2) {
if (strcmp(arg_cmd, "dump") == 0)
if (strncmp(arg_cmd, "dump", 50) == 0)
flags = O_RDONLY;
}
}