Move devd to separate repository

1 files changed, 0 insertions, 167 deletions

diff --git a/src/devd.c b/src/devd.c
deleted file mode 100644
index 3febfe95..00000000
--- a/src/devd.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
-devd reads kernel uevents via netlink and for each one spawns the
-/etc/hotplug script with an environment consisting of the uevent
-keys and values.
-
-After setting up the netlink socket, devd does a double fork to
-execute an orphaned /libexec/devd-trigger, which walks /sys/devices,
-triggering "add" uevents for each one.
-*/
-#define _POSIX_C_SOURCE 200809L
-#include <errno.h>
-#include <stdarg.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdnoreturn.h>
-#include <string.h>
-
-#include <fcntl.h>
-#include <spawn.h>
-#include <sys/socket.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include <linux/netlink.h>
-
-#ifndef PREFIX
-#define PREFIX
-#endif
-#define HOTPLUG PREFIX "/etc/hotplug"
-#define TRIGGER PREFIX "/libexec/devd-trigger"
-
-#define LEN(a) (sizeof(a) / sizeof((a)[0]))
-
-static posix_spawn_file_actions_t fileactions;
-
-static noreturn void
-fatal(const char *fmt, ...)
-{
-	va_list ap;
-
-	va_start(ap, fmt);
-	vfprintf(stderr, fmt, ap);
-	va_end(ap);
-	if (fmt[0] && fmt[strlen(fmt) - 1] == ':') {
-		fputc(' ', stderr);
-		perror(NULL);
-	} else {
-		fputc('\n', stderr);
-	}
-	exit(1);
-}
-
-static int
-spawn(char *cmd, char *const env[])
-{
-	int err, status;
-	pid_t pid;
-
-	err = posix_spawn(&pid, cmd, &fileactions, NULL, (char *[]){cmd, NULL}, env);
-	if (err) {
-		fprintf(stderr, "spawn %s: %s\n", cmd, strerror(err));
-		return -1;
-	}
-	if (waitpid(pid, &status, 0) == -1) {
-		fprintf(stderr, "wait %jd: %s\n", (intmax_t)pid, strerror(errno));
-		return -1;
-	}
-	if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
-		return -1;
-	return 0;
-}
-
-int
-main(int argc, char *argv[])
-{
-	extern char **environ;
-	int sock, err, status, rcvbuf = 8 * 1024 * 1024;
-	struct sockaddr_nl addr = {
-		.nl_family = AF_NETLINK,
-		.nl_groups = 1,
-	};
-	char buf[8192], *var, *eql, *nul, **envp, *env[256];
-	size_t envlen, envbase;
-	struct msghdr msg = {
-		.msg_iov = (struct iovec[]){{buf, sizeof(buf)}},
-		.msg_iovlen = 1,
-	};
-	ssize_t ret;
-	pid_t pid;
-
-	/* setup environment */
-	envlen = 0;
-	for (envp = environ; *envp; ++envp) {
-		if (strncmp(*envp, "PATH=", 5) == 0 ||
-		    strncmp(*envp, "HOME=", 5) == 0)
-		{
-			env[envlen++] = *envp;
-		}
-	}
-	envbase = envlen;
-
-	/* create spawn file actions for child */
-	err = posix_spawn_file_actions_init(&fileactions);
-	if (err) {
-		perror(NULL);
-		return 1;
-	}
-	err = posix_spawn_file_actions_addopen(&fileactions, 0, "/dev/null", O_RDONLY, 0);
-	if (err) {
-		perror(NULL);
-		return 1;
-	}
-
-	/* open netlink socket */
-	sock = socket(AF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC, NETLINK_KOBJECT_UEVENT);
-	if (sock == -1)
-		fatal("socket:");
-	if (setsockopt(sock, SOL_SOCKET, SO_RCVBUFFORCE, &rcvbuf, sizeof(rcvbuf)) == -1)
-		fatal("setsockopt:");
-	if (bind(sock, (struct sockaddr *)&addr, sizeof(addr)) == -1)
-		fatal("bind:");
-
-	/* trigger system uevents */
-	pid = fork();
-	if (pid == -1)
-		fatal("fork:");
-	if (pid == 0) {
-		err = posix_spawn(&pid, TRIGGER, NULL, NULL, (char *[]){TRIGGER, NULL}, environ);
-		if (err)
-			fatal("spawn %s:", TRIGGER);
-		return 0;
-	}
-	if (waitpid(pid, &status, 0) == -1)
-		fatal("waitpid %jd:", (intmax_t)pid);
-	if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
-		return 1;
-
-next:
-	for (;;) {
-		ret = recvmsg(sock, &msg, sizeof(buf));
-		if (ret == 0)
-			break;
-		if (ret == -1)
-			fatal("recvmsg:");
-		if (msg.msg_flags & MSG_TRUNC)
-			continue;
-		envlen = envbase;
-		for (var = buf; var < buf + ret; var = nul + 1) {
-			nul = memchr(var, '\0', ret - (var - buf));
-			if (!nul) {
-				fprintf(stderr, "netlink message is not NULL-terminated\n");
-				goto next;
-			}
-			eql = strchr(var, '=');
-			if (!eql)
-				continue;
-			if (envlen == LEN(env) - 1) {
-				fprintf(stderr, "uevent has too many variables\n");
-				goto next;
-			}
-			env[envlen++] = var;
-		}
-		env[envlen] = NULL;
-		spawn(HOTPLUG, env);
-	}
-}