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Add a reload command to the cli tool.

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This will look at the kore.pid file in the current directory
and send a SIGHUP signal to it. It's mostly a handy shortcut
since you could of course do a kill -HUP `cat kore.pid` easily.
This commit is contained in:
Joris Vink 2017-02-22 20:38:24 +01:00
parent 970356a3e9
commit 93ab52dcf5
1 changed files with 50 additions and 0 deletions
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50
src/cli.c
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@ -34,6 +34,7 @@
#include <fcntl.h>
#include <time.h>
#include <stdarg.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -131,6 +132,7 @@ static void *cli_realloc(void *, size_t);
static char *cli_text_trim(char *, size_t);
static char *cli_read_line(FILE *, char *, size_t);
static long long cli_strtonum(const char *, long long, long long);
static int cli_split_string(char *, const char *, char **, size_t);
static void usage(void) __attribute__((noreturn));
@ -194,6 +196,7 @@ static void cli_info(int, char **);
static void cli_build(int, char **);
static void cli_clean(int, char **);
static void cli_create(int, char **);
static void cli_reload(int, char **);
static void cli_flavor(int, char **);
static void file_create_src(void);
@ -203,6 +206,7 @@ static void file_create_gitignore(void);
static struct cmd cmds[] = {
{ "help", "this help text", cli_help },
{ "run", "run an application (-fnr implied)", cli_run },
{ "reload", "reload the application (SIGHUP)", cli_reload },
{ "info", "show info on kore on this system", cli_info },
{ "build", "build an application", cli_build },
{ "clean", "cleanup the build files", cli_clean },
@ -642,6 +646,29 @@ cli_run(int argc, char **argv)
cli_run_kore();
}
static void
cli_reload(int argc, char **argv)
{
int fd;
size_t len;
pid_t pid;
char *buf;
cli_file_open("kore.pid", O_RDONLY, &fd);
cli_file_read(fd, &buf, &len);
cli_file_close(fd);
if (buf[len - 1] == '\n')
buf[len - 1] = '\0';
pid = cli_strtonum(buf, 0, UINT_MAX);
if (kill(pid, SIGHUP) == -1)
fatal("failed to reload: %s", errno_s);
printf("reloaded application\n");
}
static void
cli_info(int argc, char **argv)
{
@ -2100,6 +2127,29 @@ cli_text_trim(char *string, size_t len)
return (string);
}
static long long
cli_strtonum(const char *str, long long min, long long max)
{
long long l;
char *ep;
if (min > max)
fatal("cli_strtonum: min > max");
errno = 0;
l = strtoll(str, &ep, 10);
if (errno != 0 || str == ep || *ep != '\0')
fatal("strtoll(): %s", errno_s);
if (l < min)
fatal("cli_strtonum: value < min");
if (l > max)
fatal("cli_strtonum: value > max");
return (l);
}
static void
fatal(const char *fmt, ...)
{