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better errors

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- corrected some errors not showing strerror()
- fatal errors are wrapper inside a wrap_error() macro that shows in which
function the error was launched
master
Alessandro Mauri 3 years ago
parent 82b25f1e50
commit fb130ed809
1 changed files with 45 additions and 47 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 92
      hkd.c

92
hkd.c
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@ -63,6 +63,7 @@
#define test_bit(yalv, abs_b) ((((char *)abs_b)[yalv/8] & (1<<yalv%8)) > 0) #define test_bit(yalv, abs_b) ((((char *)abs_b)[yalv/8] & (1<<yalv%8)) > 0)
#define array_size(val) (val ? sizeof(val)/sizeof(val[0]) : 0) #define array_size(val) (val ? sizeof(val)/sizeof(val[0]) : 0)
#define array_size_const(val) ((int)(sizeof(val)/sizeof(val[0]))) #define array_size_const(val) ((int)(sizeof(val)/sizeof(val[0])))
#define wrap_err(s) "[%s] " s, __func__
#define EVENT_SIZE (sizeof(struct inotify_event)) #define EVENT_SIZE (sizeof(struct inotify_event))
#define EVENT_BUF_LEN (1024*(EVENT_SIZE+16)) #define EVENT_BUF_LEN (1024*(EVENT_SIZE+16))
@ -156,7 +157,7 @@ int main (int argc, char *argv[])
case 'c': case 'c':
ext_config_file = malloc(strlen(optarg) + 1); ext_config_file = malloc(strlen(optarg) + 1);
if (!ext_config_file) if (!ext_config_file)
die("malloc in main():"); die(wrap_err("Bad malloc:"));
strcpy(ext_config_file, optarg); strcpy(ext_config_file, optarg);
break; break;
case 'd': case 'd':
@ -183,7 +184,7 @@ int main (int argc, char *argv[])
/* Check if hkd is already running */ /* Check if hkd is already running */
lock_file_descriptor = open(LOCK_FILE, O_RDWR | O_CREAT, 0600); lock_file_descriptor = open(LOCK_FILE, O_RDWR | O_CREAT, 0600);
if (lock_file_descriptor < 0) if (lock_file_descriptor < 0)
die("Can't open lock file:"); die(wrap_err("Can't open lock file:"));
fl.l_start = 0; fl.l_start = 0;
fl.l_len = 0; fl.l_len = 0;
fl.l_type = F_WRLCK; fl.l_type = F_WRLCK;
@ -211,10 +212,9 @@ int main (int argc, char *argv[])
/* Prepare directory update watcher */ /* Prepare directory update watcher */
if (event_watcher < 0) if (event_watcher < 0)
die("Could not call inotify_init:"); die(wrap_err("Could not call inotify_init:"));
if (inotify_add_watch(event_watcher, EVDEV_ROOT_DIR, IN_CREATE | IN_DELETE) < 0) if (inotify_add_watch(event_watcher, EVDEV_ROOT_DIR, IN_CREATE | IN_DELETE) < 0)
die("Could not add /dev/input to the watch list:"); die(wrap_err("Could not add /dev/input to the watch list:"));
/* Prepare epoll list */ /* Prepare epoll list */
ev_fd = prepare_epoll(fds, fd_num, event_watcher); ev_fd = prepare_epoll(fds, fd_num, event_watcher);
@ -240,7 +240,7 @@ int main (int argc, char *argv[])
sleep(1); // wait for devices to settle sleep(1); // wait for devices to settle
update_descriptors_list(&fds, &fd_num); update_descriptors_list(&fds, &fd_num);
if (close(ev_fd) < 0) if (close(ev_fd) < 0)
die("Could not close event filedescriptors list (ev_fd):"); die(wrap_err("Could not close event fd list (ev_fd):"));
ev_fd = prepare_epoll(fds, fd_num, event_watcher); ev_fd = prepare_epoll(fds, fd_num, event_watcher);
goto mainloop_begin; goto mainloop_begin;
} }
@ -304,7 +304,7 @@ int main (int argc, char *argv[])
close(event_watcher); close(event_watcher);
for (int i = 0; i < fd_num; i++) for (int i = 0; i < fd_num; i++)
if (close(fds[i]) == -1) if (close(fds[i]) == -1)
die("Error closing file descriptors:"); die(wrap_err("Error closing file descriptors:"));
return 0; return 0;
} }
@ -352,7 +352,7 @@ void int_handler (int signum)
switch (signum) { switch (signum) {
case SIGINT: case SIGINT:
if (dead) if (dead)
die("An error occured, exiting"); die(wrap_err("An error occured, exiting"));
if (vflag) if (vflag)
printf(yellow("Received interrupt signal, exiting gracefully...\n")); printf(yellow("Received interrupt signal, exiting gracefully...\n"));
dead = 1; dead = 1;
@ -382,20 +382,20 @@ void exec_command (char *command)
return; return;
default: default:
/* Some other error */ /* Some other error */
fprintf(stderr, "Could not parse, %s is not valid\n", command); fprintf(stderr, wrap_err("Could not parse, %s is not valid\n"), command);
return; return;
} }
pid_t cpid; pid_t cpid;
switch (cpid = fork()) { switch (cpid = fork()) {
case -1: case -1:
fprintf(stderr, "Could not create child process: %s", strerror(errno)); fprintf(stderr, wrap_err("Could not create child process: %s"), strerror(errno));
wordfree(&result); wordfree(&result);
break; break;
case 0: case 0:
/* This is the child process, execute the command */ /* This is the child process, execute the command */
execvp(result.we_wordv[0], result.we_wordv); execvp(result.we_wordv[0], result.we_wordv);
die("%s:", command); die(wrap_err("%s:"), command);
break; break;
default: default:
while (waitpid(cpid, NULL, WNOHANG) == -1) {} while (waitpid(cpid, NULL, WNOHANG) == -1) {}
@ -414,7 +414,7 @@ void update_descriptors_list (int **fds, int *fd_num)
/* Open the event directory */ /* Open the event directory */
DIR *ev_dir = opendir(EVDEV_ROOT_DIR); DIR *ev_dir = opendir(EVDEV_ROOT_DIR);
if (!ev_dir) if (!ev_dir)
die("Could not open /dev/input:"); die(wrap_err("Could not open /dev/input:"));
(*fd_num) = 0; (*fd_num) = 0;
@ -441,7 +441,7 @@ void update_descriptors_list (int **fds, int *fd_num)
memset(evtype_b, 0, sizeof(evtype_b)); memset(evtype_b, 0, sizeof(evtype_b));
if (ioctl(tmp_fd, EVIOCGBIT(0, EV_MAX), evtype_b) < 0) { if (ioctl(tmp_fd, EVIOCGBIT(0, EV_MAX), evtype_b) < 0) {
if (vflag) if (vflag)
printf(red("Could not read capabilities of device %s\n"),ev_path); printf(red("Could not read capabilities of device %s\n"), ev_path);
close(tmp_fd); close(tmp_fd);
continue; continue;
} }
@ -455,7 +455,7 @@ void update_descriptors_list (int **fds, int *fd_num)
tmp_p = realloc((*fds), sizeof(int) * ((*fd_num) + 1)); tmp_p = realloc((*fds), sizeof(int) * ((*fd_num) + 1));
if (!tmp_p) if (!tmp_p)
die("realloc file descriptors:"); die(wrap_err("Realloc file descriptors:"));
(*fds) = (int *) tmp_p; (*fds) = (int *) tmp_p;
(*fds)[(*fd_num)] = tmp_fd; (*fds)[(*fd_num)] = tmp_fd;
@ -466,7 +466,7 @@ void update_descriptors_list (int **fds, int *fd_num)
if (vflag) if (vflag)
printf(green("Monitoring %d devices\n"), *fd_num); printf(green("Monitoring %d devices\n"), *fd_num);
} else { } else {
die("Could not open any devices, exiting"); die(wrap_err("Could not open any devices, exiting"));
} }
} }
@ -476,12 +476,12 @@ int prepare_epoll (int *fds, int fd_num, int event_watcher)
static struct epoll_event epoll_read_ev; static struct epoll_event epoll_read_ev;
epoll_read_ev.events = EPOLLIN; epoll_read_ev.events = EPOLLIN;
if (ev_fd < 0) if (ev_fd < 0)
die("epoll_create failed in prepare_epoll:"); die(wrap_err("epoll_create failed:"));
if (epoll_ctl(ev_fd, EPOLL_CTL_ADD, event_watcher, &epoll_read_ev) < 0) if (epoll_ctl(ev_fd, EPOLL_CTL_ADD, event_watcher, &epoll_read_ev) < 0)
die("Could not add file descriptor to the epoll list:"); die(wrap_err("Could not add file descriptor to the epoll list:"));
for (int i = 0; i < fd_num; i++) for (int i = 0; i < fd_num; i++)
if (epoll_ctl(ev_fd, EPOLL_CTL_ADD, fds[i], &epoll_read_ev) < 0) if (epoll_ctl(ev_fd, EPOLL_CTL_ADD, fds[i], &epoll_read_ev) < 0)
die("Could not add file descriptor to the epoll list:"); die(wrap_err("Could not add file descriptor to the epoll list:"));
return ev_fd; return ev_fd;
} }
@ -532,9 +532,9 @@ void hotkey_list_add (struct hotkey_list_e *head, union hotkey_main_data *dt, ch
if (!(size = strlen(cmd))) if (!(size = strlen(cmd)))
return; return;
if (!(tmp = malloc(sizeof(struct hotkey_list_e)))) if (!(tmp = malloc(sizeof(struct hotkey_list_e))))
die("Memory allocation failed in hotkey_list_add():"); die(wrap_err("Bad malloc:"));
if (!(tmp->command = malloc(size + 1))) if (!(tmp->command = malloc(size + 1)))
die("Memory allocation failed in hotkey_list_add():"); die(wrap_err("Bad malloc:"));
strcpy(tmp->command, cmd); strcpy(tmp->command, cmd);
tmp->data = *dt; tmp->data = *dt;
tmp->fuzzy = f; tmp->fuzzy = f;
@ -594,15 +594,15 @@ void parse_config_file (void)
/* If the error was WRDE_NOSPACE, /* If the error was WRDE_NOSPACE,
* then perhaps part of the result was allocated */ * then perhaps part of the result was allocated */
wordfree (&result); wordfree (&result);
die("Not enough space:"); die(wrap_err("Not enough space:"));
default: default:
die("Path not valid:"); die(wrap_err("Path not valid:"));
} }
config_file = open(result.we_wordv[0], O_RDONLY | O_NONBLOCK); config_file = open(result.we_wordv[0], O_RDONLY | O_NONBLOCK);
wordfree(&result); wordfree(&result);
if (config_file < 0) if (config_file < 0)
die("Error opening config file:"); die(wrap_err("Error opening config file:"));
free(ext_config_file); free(ext_config_file);
ext_config_file = NULL; ext_config_file = NULL;
} else { } else {
@ -614,9 +614,9 @@ void parse_config_file (void)
/* If the error was WRDE_NOSPACE, /* If the error was WRDE_NOSPACE,
* then perhaps part of the result was allocated */ * then perhaps part of the result was allocated */
wordfree (&result); wordfree (&result);
die("Not enough space:"); die(wrap_err("Not enough space:"));
default: default:
die("Path not valid:"); die(wrap_err("Path not valid:"));
} }
config_file = open(result.we_wordv[0], O_RDONLY | O_NONBLOCK); config_file = open(result.we_wordv[0], O_RDONLY | O_NONBLOCK);
@ -627,7 +627,7 @@ void parse_config_file (void)
printf(yellow("config file not found at %s\n"), config_paths[i]); printf(yellow("config file not found at %s\n"), config_paths[i]);
} }
if (!config_file) if (!config_file)
die("Could not open any config files, check the log for more details"); die(wrap_err("Could not open any config files, check stderr for more details"));
} }
/* Using mmap because of simplicity, most config files are smaller than /* Using mmap because of simplicity, most config files are smaller than
@ -644,12 +644,10 @@ void parse_config_file (void)
// FIXME: page align size // FIXME: page align size
buffer = mmap(NULL, file_size, PROT_READ, MAP_PRIVATE, config_file, 0); buffer = mmap(NULL, file_size, PROT_READ, MAP_PRIVATE, config_file, 0);
if (buffer == MAP_FAILED) if (buffer == MAP_FAILED)
die("mmap failed"); die(wrap_err("mmap failed:"));
close(config_file); close(config_file);
bb = buffer; bb = buffer;
// write(STDOUT_FILENO, bb, file_size);
hotkey_list_destroy(hotkey_list); hotkey_list_destroy(hotkey_list);
hotkey_list = NULL; hotkey_list = NULL;
while (!eof) { while (!eof) {
@ -694,8 +692,8 @@ void parse_config_file (void)
type = ALIAS; type = ALIAS;
break; break;
default: default:
die("Error at line %d: " die(wrap_err("Error at line %d: "
"hotkey definition must start with '-', '*' or '@'", "hotkey definition must start with '-', '*' or '@'"),
linenum); linenum);
break; break;
} }
@ -706,12 +704,12 @@ void parse_config_file (void)
case GET_KEYS: case GET_KEYS:
for (token_size = 0; token_size < (file_size - (bb - buffer)) && !(bb[token_size] == ':' || bb[token_size] == '\n'); token_size++); for (token_size = 0; token_size < (file_size - (bb - buffer)) && !(bb[token_size] == ':' || bb[token_size] == '\n'); token_size++);
if (bb[token_size] == '\n') if (bb[token_size] == '\n')
die("Error at line %d: " die(wrap_err("Error at line %d: "
"no command specified, missing ':' after keys", "no command specified, missing ':' after keys"),
linenum); linenum);
keys = malloc(token_size + 1); keys = malloc(token_size + 1);
if (!keys) if (!keys)
die("malloc failed in keys"); die(wrap_err("Bad malloc parsing keys:"));
memcpy(keys, bb, token_size); memcpy(keys, bb, token_size);
keys[token_size] = '\0'; keys[token_size] = '\0';
bb += token_size + 1; bb += token_size + 1;
@ -727,7 +725,7 @@ void parse_config_file (void)
} }
cmd = malloc(token_size + 1); cmd = malloc(token_size + 1);
if (!cmd) if (!cmd)
die("malloc failed in cmd"); die(wrap_err("Bad malloc parsing command:"));
memcpy(cmd, bb, token_size); memcpy(cmd, bb, token_size);
cmd[token_size] = '\0'; cmd[token_size] = '\0';
bb += token_size; bb += token_size;
@ -735,7 +733,7 @@ void parse_config_file (void)
break; break;
case LAST: case LAST:
if (!keys) if (!keys)
die("error"); die(wrap_err("Keys is NULL"));
i_tmp = strlen(keys); i_tmp = strlen(keys);
for (int i = 0; i < i_tmp; i++) { for (int i = 0; i < i_tmp; i++) {
if (isblank(keys[i])) { if (isblank(keys[i])) {
@ -745,22 +743,22 @@ void parse_config_file (void)
} }
cp_tmp = strtok(keys, ","); cp_tmp = strtok(keys, ",");
if(!cp_tmp) if(!cp_tmp)
die("Error at line %d: " die(wrap_err("Error at line %d: "
"keys not present", linenum - 1); "keys not present"), linenum - 1);
if (type != ALIAS) { if (type != ALIAS) {
do { do {
if (!(us_tmp = key_to_code(cp_tmp))) { if (!(us_tmp = key_to_code(cp_tmp))) {
die("Error at line %d: " die(wrap_err("Error at line %d: "
"%s is not a valid key", "%s is not a valid key"),
linenum - 1, cp_tmp); linenum - 1, cp_tmp);
} }
if (key_buffer_add(&dt.kb, us_tmp)) if (key_buffer_add(&dt.kb, us_tmp))
die("Too many keys"); die(wrap_err("Too many keys"));
} while ((cp_tmp = strtok(NULL, ","))); } while ((cp_tmp = strtok(NULL, ",")));
} else { } else {
if (!(dt.name = malloc(strlen(cp_tmp) + 1))) if (!(dt.name = malloc(strlen(cp_tmp) + 1)))
die("malloc in parse_config_file():"); die(wrap_err("Bad malloc:"));
strcpy(dt.name, cp_tmp); strcpy(dt.name, cp_tmp);
} }
@ -775,8 +773,8 @@ void parse_config_file (void)
while (isblank(*cp_tmp)) while (isblank(*cp_tmp))
cp_tmp++; cp_tmp++;
if (*cp_tmp == '\0') if (*cp_tmp == '\0')
die("Error at line %d: " die(wrap_err("Error at line %d: "
"command not present", linenum - 1); "command not present"), linenum - 1);
hotkey_list_add(hotkey_list, &dt, cp_tmp, type); hotkey_list_add(hotkey_list, &dt, cp_tmp, type);
@ -790,7 +788,7 @@ void parse_config_file (void)
parse_state = NORM; parse_state = NORM;
break; break;
default: default:
die("Unknown state in parse_config_file"); die(wrap_err("Unknown state"));
break; break;
} }
@ -879,7 +877,7 @@ void replace (char **s, const char *m, const char *r)
if ((t1[ms] == '\0' || isblank(t1[ms])) if ((t1[ms] == '\0' || isblank(t1[ms]))
&& isblank(t1 > *new_s ? *(t1 - 1) : ' ')) { && isblank(t1 > *new_s ? *(t1 - 1) : ' ')) {
if (!(t2 = realloc(offs, sizeof(int) * (count + 1)))) if (!(t2 = realloc(offs, sizeof(int) * (count + 1))))
die("bad realloc"); die(wrap_err("Bad realloc:"));
offs = t2; offs = t2;
offs[count] = (t1 - *new_s) + (rs - ms) * count; offs[count] = (t1 - *new_s) + (rs - ms) * count;
count++; count++;
@ -889,7 +887,7 @@ void replace (char **s, const char *m, const char *r)
if ((rs - ms) > 0) { if ((rs - ms) > 0) {
if (!(t1 = realloc(*new_s, nss + (rs - ms) * count))) if (!(t1 = realloc(*new_s, nss + (rs - ms) * count)))
die("bad realloc"); die(wrap_err("Bad realloc:"));
*new_s = t1; *new_s = t1;
} }

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