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tools: env: introduce setenv/printenv argument structs

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goal is to use getopt for all argument parsing instead of adhoc
parsing in fw_getenv/fw_setenv functions

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
This commit is contained in:
Andreas Fenkart 2015-12-09 13:13:23 +01:00 committed by Tom Rini
parent 8b27abd8ab
commit 07ce944021
2 changed files with 84 additions and 38 deletions
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9
tools/env/fw_env.h vendored
View file

@ -54,6 +54,15 @@
"bootm"
#endif
struct printenv_args {
};
extern struct printenv_args printenv_args;
struct setenv_args {
char *script_file;
};
extern struct setenv_args setenv_args;
extern int fw_printenv(int argc, char *argv[]);
extern char *fw_getenv (char *name);
extern int fw_setenv (int argc, char *argv[]);

113
tools/env/fw_env_main.c vendored
View file

@ -45,6 +45,9 @@ static struct option long_options[] = {
{NULL, 0, NULL, 0}
};
struct printenv_args printenv_args;
struct setenv_args setenv_args;
void usage(void)
{
@ -77,31 +80,9 @@ void usage(void)
);
}
int main(int argc, char *argv[])
int parse_printenv_args(int argc, char *argv[])
{
char *p;
char *cmdname = *argv;
char *script_file = NULL;
int c;
const char *lockname = "/var/lock/" CMD_PRINTENV ".lock";
int lockfd = -1;
int retval = EXIT_SUCCESS;
lockfd = open(lockname, O_WRONLY | O_CREAT | O_TRUNC, 0666);
if (-1 == lockfd) {
fprintf(stderr, "Error opening lock file %s\n", lockname);
return EXIT_FAILURE;
}
if (-1 == flock(lockfd, LOCK_EX)) {
fprintf(stderr, "Error locking file %s\n", lockname);
close(lockfd);
return EXIT_FAILURE;
}
if ((p = strrchr (cmdname, '/')) != NULL) {
cmdname = p + 1;
}
while ((c = getopt_long (argc, argv, "a:c:ns:h",
long_options, NULL)) != EOF) {
@ -115,40 +96,96 @@ int main(int argc, char *argv[])
case 'n':
/* handled in fw_printenv */
break;
case 'h':
usage();
exit(EXIT_SUCCESS);
break;
default: /* '?' */
usage();
exit(EXIT_FAILURE);
break;
}
}
return 0;
}
int parse_setenv_args(int argc, char *argv[])
{
int c;
while ((c = getopt_long (argc, argv, "a:c:ns:h",
long_options, NULL)) != EOF) {
switch (c) {
case 'a':
/* AES key, handled later */
break;
case 'c':
/* handled later */
break;
case 's':
script_file = optarg;
setenv_args.script_file = optarg;
break;
case 'h':
usage();
goto exit;
exit(EXIT_SUCCESS);
break;
default: /* '?' */
fprintf(stderr, "Try `%s --help' for more information."
"\n", cmdname);
retval = EXIT_FAILURE;
goto exit;
usage();
exit(EXIT_FAILURE);
break;
}
}
return 0;
}
int main(int argc, char *argv[])
{
char *cmdname = *argv;
const char *lockname = "/var/lock/" CMD_PRINTENV ".lock";
int lockfd = -1;
int retval = EXIT_SUCCESS;
if (strrchr(cmdname, '/') != NULL)
cmdname = strrchr(cmdname, '/') + 1;
if (strcmp(cmdname, CMD_PRINTENV) == 0) {
if (parse_printenv_args(argc, argv))
exit(EXIT_FAILURE);
} else if (strcmp(cmdname, CMD_SETENV) == 0) {
if (parse_setenv_args(argc, argv))
exit(EXIT_FAILURE);
} else {
fprintf(stderr,
"Identity crisis - may be called as `%s' or as `%s' but not as `%s'\n",
CMD_PRINTENV, CMD_SETENV, cmdname);
exit(EXIT_FAILURE);
}
lockfd = open(lockname, O_WRONLY | O_CREAT | O_TRUNC, 0666);
if (-1 == lockfd) {
fprintf(stderr, "Error opening lock file %s\n", lockname);
return EXIT_FAILURE;
}
if (-1 == flock(lockfd, LOCK_EX)) {
fprintf(stderr, "Error locking file %s\n", lockname);
close(lockfd);
return EXIT_FAILURE;
}
if (strcmp(cmdname, CMD_PRINTENV) == 0) {
if (fw_printenv(argc, argv) != 0)
retval = EXIT_FAILURE;
} else if (strcmp(cmdname, CMD_SETENV) == 0) {
if (!script_file) {
if (!setenv_args.script_file) {
if (fw_setenv(argc, argv) != 0)
retval = EXIT_FAILURE;
} else {
if (fw_parse_script(script_file) != 0)
if (fw_parse_script(setenv_args.script_file) != 0)
retval = EXIT_FAILURE;
}
} else {
fprintf(stderr,
"Identity crisis - may be called as `" CMD_PRINTENV
"' or as `" CMD_SETENV "' but not as `%s'\n",
cmdname);
retval = EXIT_FAILURE;
}
exit:
flock(lockfd, LOCK_UN);
close(lockfd);
return retval;