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util/nvmutil: improved error handling

fsdg20230625
Leah Rowe 2022-11-27 00:27:07 +00:00
parent 55a951a718
commit a94bac81f3
1 changed files with 25 additions and 24 deletions
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49
util/nvmutil/nvmutil.c
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@ -37,7 +37,6 @@
ssize_t readFromFile(int *fd, uint8_t *buf, const char *path, int flags,
size_t size);
void setmac(const char *strMac);
void cmd(const char *command);
void cmd_dump(void);
void showmac(int partnum);
void hexdump(int partnum);
@ -72,6 +71,8 @@ main(int argc, char *argv[])
int flags = O_RDWR;
char *strMac = NULL;
char *strRMac = "??:??:??:??:??:??";
void (*cmd)(void) = NULL;
nvmPartModified[0] = 0;
nvmPartModified[1] = 0;
@ -89,15 +90,27 @@ main(int argc, char *argv[])
err(1, "pledge");
#endif
flags = O_RDONLY;
} else if (strcmp(COMMAND, "setmac") == 0) {
cmd = &cmd_dump;
} else if (strcmp(COMMAND, "setmac") == 0)
strMac = strRMac;
}
else if (strcmp(COMMAND, "swap") == 0)
cmd = &cmd_swap;
else
errno = EINVAL;
} else if (argc == 4) {
if (strcmp(COMMAND, "setmac") == 0)
strMac = MAC_ADDRESS;
else if ((!((part = PARTNUM[0] - '0') == 0 || part == 1))
|| PARTNUM[1])
errno = EINVAL;
else if (strcmp(COMMAND, "setchecksum") == 0)
cmd = &cmd_setchecksum;
else if (strcmp(COMMAND, "brick") == 0)
cmd = &cmd_brick;
else if (strcmp(COMMAND, "copy") == 0)
cmd = &cmd_copy;
else
errno = EINVAL;
} else
errno = EINVAL;
@ -107,17 +120,22 @@ main(int argc, char *argv[])
if (readFromFile(&fd, gbe, FILENAME, flags, SIZE_8KB) != SIZE_8KB)
goto nvmutil_exit;
if (errno == ENOTDIR)
errno = 0;
if (errno != 0)
goto nvmutil_exit;
if (strMac != NULL)
setmac(strMac);
else if (cmd != NULL)
(*cmd)();
else
cmd(COMMAND);
errno = EINVAL;
if (gbeFileModified)
writeGbeFile(&fd, FILENAME);
nvmutil_exit:
if (errno == ENOTDIR)
errno = 0;
if (!((errno == ECANCELED) && (flags == O_RDONLY)))
if (errno != 0)
fprintf(stderr, "%s\n", strerror(errno));
@ -228,7 +246,7 @@ setmac(const char *strMac)
for (o = 0; o < 3; o++)
setWord(o, partnum, mac[o]);
part = partnum;
cmd("setchecksum");
cmd_setchecksum();
}
return;
invalid_mac_address:
@ -237,23 +255,6 @@ invalid_mac_address:
return;
}
void
cmd(const char *command)
{
if (strcmp(command, "dump") == 0) {
cmd_dump();
} else if (strcmp(command, "setchecksum") == 0) {
cmd_setchecksum();
} else if (strcmp(command, "brick") == 0) {
cmd_brick();
} else if (strcmp(command, "swap") == 0) {
cmd_swap();
} else if (strcmp(command, "copy") == 0) {
cmd_copy();
} else
errno = EINVAL;
}
void
cmd_dump(void)
{