diff options
Diffstat (limited to 'iscsiuio/src/unix/main.c')
| -rw-r--r-- | iscsiuio/src/unix/main.c | 51 |
1 files changed, 41 insertions, 10 deletions
diff --git a/iscsiuio/src/unix/main.c b/iscsiuio/src/unix/main.c index 39d5339..5168e4e 100644 --- a/iscsiuio/src/unix/main.c +++ b/iscsiuio/src/unix/main.c @@ -48,6 +48,9 @@ #include <net/ethernet.h> #include <arpa/inet.h> #include <sys/mman.h> +#ifndef NO_SYSTEMD +#include <systemd/sd-daemon.h> +#endif #include "uip.h" #include "uip_arp.h" @@ -76,7 +79,7 @@ ******************************************************************************/ #define PFX "main " -static const char default_pid_filepath[] = "/var/run/iscsiuio.pid"; +static const char default_pid_filepath[] = "/run/iscsiuio.pid"; /******************************************************************************* * Global Variables @@ -146,7 +149,7 @@ signal_wait: fini_logger(SHUTDOWN_LOGGER); rc = init_logger(main_log.log_file); if (rc != 0) - printf("Could not initialize the logger in " + fprintf(stderr, "WARN: Could not initialize the logger in " "signal!\n"); goto signal_wait; default: @@ -239,6 +242,7 @@ int main(int argc, char *argv[]) int foreground = 0; pid_t pid; pthread_attr_t attr; + int pipefds[2]; /* Record the start time for the user space daemon */ opt.start_time = time(NULL); @@ -281,7 +285,7 @@ int main(int argc, char *argv[]) /* initialize the logger */ rc = init_logger(main_log.log_file); if (rc != 0 && opt.debug == DEBUG_ON) - printf("WARN: Could not initialize the logger\n"); + fprintf(stderr, "WARN: Could not initialize the logger\n"); } LOG_INFO("Started iSCSI uio stack: Ver " PACKAGE_VERSION); @@ -316,38 +320,53 @@ int main(int argc, char *argv[]) fd = open(pid_file, O_WRONLY | O_CREAT, 0644); if (fd < 0) { - printf("Unable to create pid file: %s", pid_file); + fprintf(stderr, "ERR: Unable to create pid file: %s\n", + pid_file); + exit(1); + } + + if (pipe(pipefds) < 0) { + fprintf(stderr, "ERR: Unable to create a PIPE: %s\n", + strerror(errno)); exit(1); } pid = fork(); if (pid < 0) { - printf("Starting daemon failed"); + fprintf(stderr, "ERR: Starting daemon failed\n"); exit(1); } else if (pid) { + char msgbuf[4]; + + /* parent: wait for child msg then exit */ + close(pipefds[1]); + read(pipefds[0], msgbuf, sizeof(msgbuf)); exit(0); } + /* the child */ rc = chdir("/"); if (rc == -1) - printf("Unable to chdir(\") [%s]", strerror(errno)); + fprintf(stderr, "WARN: Unable to chdir(\") [%s]\n", strerror(errno)); if (lockf(fd, F_TLOCK, 0) < 0) { - printf("Unable to lock pid file: %s [%s]", + fprintf(stderr, "ERR: Unable to lock pid file: %s [%s]\n", pid_file, strerror(errno)); exit(1); } rc = ftruncate(fd, 0); if (rc == -1) - printf("ftruncate(%d, 0) failed [%s]", + fprintf(stderr, "WARN: ftruncate(%d, 0) failed [%s]\n", fd, strerror(errno)); sprintf(buf, "%d\n", getpid()); written_bytes = write(fd, buf, strlen(buf)); - if (written_bytes == -1) - printf("Could not write pid file [%s]", + if (written_bytes == -1) { + fprintf(stderr, "ERR: Could not write pid file [%s]\n", strerror(errno)); + exit(1); + } close(fd); daemon_init(); @@ -393,6 +412,18 @@ int main(int argc, char *argv[]) if (rc != 0) goto error; + if (!foreground) { + /* signal parent they can go away now */ + close(pipefds[0]); + write(pipefds[1], "ok\n", 3); + close(pipefds[1]); + } + +#ifndef NO_SYSTEMD + sd_notify(0, "READY=1\n" + "STATUS=Ready to process requests\n"); +#endif + /* NetLink connection to listen to NETLINK_ISCSI private messages */ if (nic_nl_open() != 0) goto error; |