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Remove the arbitrary limit on the path to the default parameter file. Add a verb to the param command to set the default parameter file.

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This commit is contained in:
px4dev
2012-10-31 12:59:24 -07:00
parent 3c987d6368
commit 8bfceef89c
3 changed files with 60 additions and 38 deletions
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apps/systemlib/param/param.c
+21 -21
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@@ -481,38 +481,38 @@ param_reset_all(void)
param_notify_changes();
}
static char param_default_file_name[50] = "/eeprom/parameters";
static const char *param_default_file = "/eeprom/parameters";
static char *param_user_file;
int
param_set_default_file(const char* filename)
{
if (filename) {
if (strlen(filename) < sizeof(param_default_file_name))
{
strcpy(param_default_file_name, filename);
} else {
warnx("param file name too long");
return 1;
}
return 0;
} else {
warnx("no valid param file name");
return 1;
if (param_user_file != NULL) {
free(param_user_file);
param_user_file = NULL;
}
if (filename)
param_user_file = strdup(filename);
return 0;
}
const char *
param_get_default_file(void)
{
return (param_user_file != NULL) ? param_user_file : param_default_file;
}
int
param_save_default(void)
{
/* delete the file in case it exists */
unlink(param_default_file_name);
unlink(param_get_default_file());
/* create the file */
int fd = open(param_default_file_name, O_WRONLY | O_CREAT | O_EXCL);
int fd = open(param_get_default_file(), O_WRONLY | O_CREAT | O_EXCL);
if (fd < 0) {
warn("opening '%s' for writing failed", param_default_file_name);
warn("opening '%s' for writing failed", param_get_default_file());
return -1;
}
@@ -522,8 +522,8 @@ param_save_default(void)
close(fd);
if (result != 0) {
unlink(param_default_file_name);
warn("error exporting parameters to '%s'", param_default_file_name);
unlink(param_get_default_file());
warn("error exporting parameters to '%s'", param_get_default_file());
return -2;
}
@@ -536,12 +536,12 @@ param_save_default(void)
int
param_load_default(void)
{
int fd = open(param_default_file_name, O_RDONLY);
int fd = open(param_get_default_file(), O_RDONLY);
if (fd < 0) {
/* no parameter file is OK, otherwise this is an error */
if (errno != ENOENT) {
warn("open '%s' for reading failed", param_default_file_name);
warn("open '%s' for reading failed", param_get_default_file());
return -1;
}
return 1;
@@ -551,7 +551,7 @@ param_load_default(void)
close(fd);
if (result != 0) {
warn("error reading parameters from '%s'", param_default_file_name);
warn("error reading parameters from '%s'", param_get_default_file());
return -2;
}