diff options
Diffstat (limited to 'cmd/runsvc/runsvc.c')
-rw-r--r-- | cmd/runsvc/runsvc.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/cmd/runsvc/runsvc.c b/cmd/runsvc/runsvc.c index 794aa29..75fdc46 100644 --- a/cmd/runsvc/runsvc.c +++ b/cmd/runsvc/runsvc.c @@ -1,6 +1,49 @@ /* SPDX-License-Identifier: ISC */ #include "runsvc.h" +static int setup_tty(const char *tty, bool truncate) +{ + int fd; + + if (tty == NULL) + return 0; + + fd = open(tty, O_RDWR); + if (fd < 0) { + perror(tty); + return -1; + } + + if (truncate) + ftruncate(fd, 0); + + close(STDIN_FILENO); + close(STDOUT_FILENO); + close(STDERR_FILENO); + + setsid(); + + dup2(fd, STDIN_FILENO); + dup2(fd, STDOUT_FILENO); + dup2(fd, STDERR_FILENO); + close(fd); + return 0; +} + +static __attribute__((noreturn)) void argv_exec(exec_t *e) +{ + char **argv = alloca(sizeof(char *) * (e->argc + 1)), *ptr; + int i; + + for (ptr = e->args, i = 0; i < e->argc; ++i, ptr += strlen(ptr) + 1) + argv[i] = ptr; + + argv[i] = NULL; + execvp(argv[0], argv); + perror(argv[0]); + exit(EXIT_FAILURE); +} + static int run_sequentially(exec_t *list) { pid_t ret, pid; |