rexy712/rexbacklight
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Fix error output on invalid permissions to write to brightness file

Browse Source
This commit is contained in:
rexy712 2021-01-03 09:54:49 -08:00
parent 50412e0006
commit 61e36bed19
1 changed files with 24 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
src/rexbacklight.c
View File

@ -63,6 +63,15 @@ const char* max_brightness_file(void){return "max_brightness";}
/////////////////////////////////////////////////////////////////////////////////////////////
//create a copy of a string and append a '/' character to the end
char* add_slash_to(const char* name, size_t namelen){
char* newname = malloc(namelen + 2);
memcpy(newname, name, namelen);
newname[namelen++] = '/';
newname[namelen] = 0;
return newname;
}
//Get a list of led/backlight devices in sysfs
struct string_array get_device_sources(void){
DIR* fd;
@ -162,6 +171,12 @@ void sleep_for(double time){
nanosleep(&ts, NULL);
}
void return_to_root_dir(void){
if(chdir(device_dir())){
io_error(IO_ERROR_OPEN, IO_ERROR_DIR, device_dir());
return_value = RETVAL_INVALID_DIR;
}
}
//update brightness incrementally over requested millisecond time interval
void fade_out(struct arg_values* arg){
FILE* fd;
@ -177,8 +192,11 @@ void fade_out(struct arg_values* arg){
start = get_time();
fd = fopen(brightness_file(), "w+");
if(!fd){
io_error_3(IO_ERROR_OPEN, IO_ERROR_FILE, device_dir(), arg->device, brightness_file());
char* devname = add_slash_to(arg->device, strlen(arg->device));
io_error_3(IO_ERROR_OPEN, IO_ERROR_FILE, device_dir(), devname, brightness_file());
return_value = RETVAL_INVALID_FILE;
free(devname);
return_to_root_dir();
return;
}
fprintf(fd, "%d", (int)value);
@ -201,18 +219,17 @@ void fade_out(struct arg_values* arg){
}
fd = fopen(brightness_file(), "w+");
if(!fd){
io_error_3(IO_ERROR_OPEN, IO_ERROR_FILE, device_dir(), arg->device, brightness_file());
char* devname = add_slash_to(arg->device, strlen(arg->device));
io_error_3(IO_ERROR_OPEN, IO_ERROR_FILE, device_dir(), devname, brightness_file());
return_value = RETVAL_INVALID_FILE;
free(devname);
return_to_root_dir();
return;
}
fprintf(fd, "%d", arg->act_delta);
fclose(fd);
if(chdir(device_dir())){
io_error(IO_ERROR_OPEN, IO_ERROR_DIR, device_dir());
return_value = RETVAL_INVALID_DIR;
return;
}
return_to_root_dir();
}
int prep_offset(struct arg_values* args){