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author | John Crispin <blogic@openwrt.org> | 2013-11-14 13:41:13 +0100 |
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committer | John Crispin <blogic@openwrt.org> | 2013-11-15 17:05:20 +0100 |
commit | 916f95cb58604038695347ee41a430d8ca1f0556 (patch) | |
tree | 5dbb52a6adaf28c6c6989ea37e6975aa52075160 /utils/askfirst.c | |
parent | f9d31edb8938341b9217ee4c14eb58111414eb97 (diff) | |
download | unitd-916f95cb58604038695347ee41a430d8ca1f0556.tar unitd-916f95cb58604038695347ee41a430d8ca1f0556.zip |
debloat and reorganize code
split app into procd and init binaries
remove log support, this is an external service now
Signed-off-by: John Crispin <blogic@openwrt.org>
Diffstat (limited to 'utils/askfirst.c')
-rw-r--r-- | utils/askfirst.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/utils/askfirst.c b/utils/askfirst.c new file mode 100644 index 0000000..6ad77aa --- /dev/null +++ b/utils/askfirst.c @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2013 John Crispin <blogic@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 + * as published by the Free Software Foundation + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <sys/types.h> +#include <sys/stat.h> + +#include <stdio.h> +#include <unistd.h> +#include <fcntl.h> + +static int redirect_output(const char *dev) +{ + pid_t p = setsid(); + int fd; + + chdir("/dev"); + fd = open(dev, O_RDWR); + chdir("/"); + + if (fd < 0) + return -1; + + dup2(fd, STDIN_FILENO); + dup2(fd, STDOUT_FILENO); + dup2(fd, STDERR_FILENO); + tcsetpgrp(fd, p); + close(fd); + + return 0; +} + +int main(int argc, char **argv) +{ + int c; + + if (redirect_output(argv[1])) + fprintf(stderr, "%s: Failed to open %s\n", argv[0], argv[1]); + + printf("Please press Enter to activate this console.\n"); + do { + c = getchar(); + if (c == EOF) + return -1; + } + while (c != 0xA); + + execvp(argv[2], &argv[2]); + printf("%s: Failed to execute %s\n", argv[0], argv[2]); + + return -1; +} |