X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=devices%2Fudev-helper.c;fp=devices%2Fudev-helper.c;h=0000000000000000000000000000000000000000;hb=2ce51d1e70aaf667be126b88a35b6210a45fb314;hp=87a7fc19ab431827c15ec1615cd94a23b5b5d113;hpb=832299e099abcf644fb8a7362a9dd18a6a965871;p=petitboot

diff --git a/devices/udev-helper.c b/devices/udev-helper.c
deleted file mode 100644
index 87a7fc1..0000000
--- a/devices/udev-helper.c
+++ /dev/null
@@ -1,635 +0,0 @@
-
-#define _GNU_SOURCE
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <stdint.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/socket.h>
-#include <sys/wait.h>
-#include <sys/un.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-#include <asm/byteorder.h>
-#include <linux/cdrom.h>
-#include <sys/ioctl.h>
-
-#include "parser.h"
-#include "paths.h"
-#include "petitboot-paths.h"
-
-/* Define below to operate without the frontend */
-#undef USE_FAKE_SOCKET
-
-/* Delay in seconds between polling of removable devices */
-#define REMOVABLE_SLEEP_DELAY	2
-
-static FILE *logf;
-static int sock;
-
-void pb_log(const char *fmt, ...)
-{
-	va_list ap;
-
-	va_start(ap, fmt);
-	vfprintf(logf, fmt, ap);
-	va_end(ap);
-}
-
-static void print_boot_option(const struct boot_option *opt)
-{
-	pb_log("\tname: %s\n", opt->name);
-	pb_log("\tdescription: %s\n", opt->description);
-	pb_log("\tboot_image: %s\n", opt->boot_image_file);
-	pb_log("\tinitrd: %s\n", opt->initrd_file);
-	pb_log("\tboot_args: %s\n", opt->boot_args);
-
-}
-
-static void print_device(const struct device *dev)
-{
-	pb_log("\tid: %s\n", dev->id);
-	pb_log("\tname: %s\n", dev->name);
-	pb_log("\tdescription: %s\n", dev->description);
-	pb_log("\tboot_image: %s\n", dev->icon_file);
-}
-
-static int write_action(int fd, enum device_action action)
-{
-	uint8_t action_buf = action;
-	return write(fd, &action_buf, sizeof(action_buf)) != sizeof(action_buf);
-}
-
-static int write_string(int fd, const char *str)
-{
-	int len, pos = 0;
-	uint32_t len_buf;
-
-	if (!str) {
-		len_buf = 0;
-		if (write(fd, &len_buf, sizeof(len_buf)) != sizeof(len_buf)) {
-			pb_log("write failed: %s\n", strerror(errno));
-			return -1;
-		}
-		return 0;
-	}
-
-	len = strlen(str);
-	if (len > (1ull << (sizeof(len_buf) * 8 - 1))) {
-		pb_log("string too large\n");
-		return -1;
-	}
-
-	len_buf = __cpu_to_be32(len);
-	if (write(fd, &len_buf, sizeof(len_buf)) != sizeof(len_buf)) {
-		pb_log("write failed: %s\n", strerror(errno));
-		return -1;
-	}
-
-	while (pos < len) {
-		int rc = write(fd, str, len - pos);
-		if (rc <= 0) {
-			pb_log("write failed: %s\n", strerror(errno));
-			return -1;
-		}
-		pos += rc;
-		str += rc;
-	}
-
-	return 0;
-}
-
-int add_device(const struct device *dev)
-{
-	int rc;
-
-	pb_log("device added:\n");
-	print_device(dev);
-	rc = write_action(sock, DEV_ACTION_ADD_DEVICE) ||
-		write_string(sock, dev->id) ||
-		write_string(sock, dev->name) ||
-		write_string(sock, dev->description) ||
-		write_string(sock, dev->icon_file);
-
-	if (rc)
-		pb_log("error writing device %s to socket\n", dev->name);
-
-	return rc;
-}
-
-int add_boot_option(const struct boot_option *opt)
-{
-	int rc;
-
-	pb_log("boot option added:\n");
-	print_boot_option(opt);
-
-	rc = write_action(sock, DEV_ACTION_ADD_OPTION) ||
-		write_string(sock, opt->id) ||
-		write_string(sock, opt->name) ||
-		write_string(sock, opt->description) ||
-		write_string(sock, opt->icon_file) ||
-		write_string(sock, opt->boot_image_file) ||
-		write_string(sock, opt->initrd_file) ||
-		write_string(sock, opt->boot_args);
-
-	if (rc)
-		pb_log("error writing boot option %s to socket\n", opt->name);
-
-	return rc;
-}
-
-int remove_device(const char *dev_path)
-{
-	return write_action(sock, DEV_ACTION_REMOVE_DEVICE) ||
-		write_string(sock, dev_path);
-}
-
-int connect_to_socket()
-{
-#ifndef USE_FAKE_SOCKET
-	int fd;
-	struct sockaddr_un addr;
-
-	fd = socket(PF_UNIX, SOCK_STREAM, 0);
-	if (fd == -1) {
-		pb_log("can't create socket: %s\n", strerror(errno));
-		return -1;
-	}
-
-	addr.sun_family = AF_UNIX;
-	strcpy(addr.sun_path, PBOOT_DEVICE_SOCKET);
-
-	if (connect(fd, (struct sockaddr *)&addr, sizeof(addr))) {
-		pb_log("can't connect to %s: %s\n",
-				addr.sun_path, strerror(errno));
-		return -1;
-	}
-	sock = fd;
-
-	return 0;
-#else
-	int fd;
-	fd = open("./debug_socket", O_WRONLY | O_CREAT, 0640);
-	if (fd < 0) {
-		pb_log("can't create output file: %s\n", strerror(errno));
-		return -1;
-	}
-	sock = fd;
-	return 0;
-#endif
-}
-
-static int mkdir_recursive(const char *dir)
-{
-	char *str, *sep;
-	int mode = 0755;
-	struct stat statbuf;
-
-	pb_log("mkdir_recursive(%s)\n", dir);
-
-	if (!*dir)
-		return 0;
-
-	if (!stat(dir, &statbuf)) {
-		if (!S_ISDIR(statbuf.st_mode)) {
-			pb_log("%s: %s exists, but isn't a directory\n",
-					__func__, dir);
-			return -1;
-		}
-		return 0;
-	}
-
-	str = strdup(dir);
-	sep = strchr(*str == '/' ? str + 1 : str, '/');
-
-	while (1) {
-
-		/* terminate the path at sep */
-		if (sep)
-			*sep = '\0';
-		pb_log("mkdir(%s)\n", str);
-
-		if (mkdir(str, mode) && errno != EEXIST) {
-			pb_log("mkdir(%s): %s\n", str, strerror(errno));
-			return -1;
-		}
-
-		if (!sep)
-			break;
-
-		/* reset dir to the full path */
-		strcpy(str, dir);
-		sep = strchr(sep + 1, '/');
-	}
-
-	free(str);
-
-	return 0;
-}
-
-static void setup_device_links(const char *device)
-{
-	struct link {
-		char *env, *dir;
-	} *link, links[] = {
-		{
-			.env = "ID_FS_UUID",
-			.dir = "disk/by-uuid"
-		},
-		{
-			.env = "ID_FS_LABEL",
-			.dir = "disk/by-label"
-		},
-		{
-			.env = NULL
-		}
-	};
-
-	for (link = links; link->env; link++) {
-		char *value, *dir, *path;
-
-		value = getenv(link->env);
-		if (!value)
-			continue;
-
-		value = encode_label(value);
-		dir = join_paths(TMP_DIR, link->dir);
-		path = join_paths(dir, value);
-
-		if (!mkdir_recursive(dir)) {
-			unlink(path);
-			if (symlink(mountpoint_for_device(device), path)) {
-				pb_log("symlink(%s): %s\n",
-						path, strerror(errno));
-			}
-		}
-
-		free(path);
-		free(dir);
-		free(value);
-	}
-}
-
-int mount_device(const char *dev_path)
-{
-	const char *dir;
-	int pid, status, rc = -1;
-	struct stat statbuf;
-
-	dir = mountpoint_for_device(dev_path);
-
-	if (stat(dir, &statbuf)) {
-		if (mkdir(dir, 0755)) {
-			pb_log("couldn't create directory %s: %s\n",
-					dir, strerror(errno));
-			goto out;
-		}
-	} else {
-		if (!S_ISDIR(statbuf.st_mode)) {
-			pb_log("mountpoint %s exists, "
-					"but isn't a directory\n", dir);
-			goto out;
-		}
-	}
-
-
-	pid = fork();
-	if (pid == -1) {
-		pb_log("%s: fork failed: %s\n", __FUNCTION__, strerror(errno));
-		goto out;
-	}
-
-	if (pid == 0) {
-		execl(MOUNT_BIN, MOUNT_BIN, dev_path, dir, "-o", "ro", NULL);
-		exit(EXIT_FAILURE);
-	}
-
-	if (waitpid(pid, &status, 0) == -1) {
-		pb_log("%s: waitpid failed: %s\n", __FUNCTION__,
-				strerror(errno));
-		goto out;
-	}
-
-	if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
-		setup_device_links(dev_path);
-		rc = 0;
-	}
-
-out:
-	return rc;
-}
-
-static int unmount_device(const char *dev_path)
-{
-	int pid, status, rc;
-
-	pid = fork();
-
-	if (pid == -1) {
-		pb_log("%s: fork failed: %s\n", __FUNCTION__, strerror(errno));
-		return -1;
-	}
-
-	if (pid == 0) {
-		execl(UMOUNT_BIN, UMOUNT_BIN, dev_path, NULL);
-		exit(EXIT_FAILURE);
-	}
-
-	if (waitpid(pid, &status, 0) == -1) {
-		pb_log("%s: waitpid failed: %s\n", __FUNCTION__,
-				strerror(errno));
-		return -1;
-	}
-
-	rc = !WIFEXITED(status) || WEXITSTATUS(status) != 0;
-
-	return rc;
-}
-
-static const struct device fake_boot_devices[] =
-{
-	{
-		.id		= "fakeDisk0",
-		.name		= "Hard Disk",
-		.icon_file	= artwork_pathname("hdd.png"),
-	},
-	{
-		.id		= "fakeDisk1",
-		.name		= "PinkCat Linux CD",
-		.icon_file	= artwork_pathname("cdrom.png"),
-	}
-};
-
-static const struct boot_option fake_boot_options[] =
-{
-	{
-		.id		= "fakeBoot0",
-		.name		= "Bloobuntu Linux",
-		.description	= "Boot Bloobuntu Linux",
-		.icon_file	= artwork_pathname("hdd.png"),
-	},
-	{
-		.id		= "fakeBoot1",
-		.name		= "Pendora Gore 6",
-		.description	= "Boot Pendora Gora 6",
-		.icon_file	= artwork_pathname("hdd.png"),
-	},
-	{
-		.id		= "fakeBoot2",
-		.name		= "Genfoo Minux",
-		.description	= "Boot Genfoo Minux",
-		.icon_file	= artwork_pathname("hdd.png"),
-	},
-	{
-		.id		= "fakeBoot3",
-		.name		= "PinkCat Linux",
-		.description	= "Install PinkCat Linux - Graphical install",
-		.icon_file	= artwork_pathname("cdrom.png"),
-	},
-};
-
-enum generic_icon_type guess_device_type(void)
-{
-	const char *type = getenv("ID_TYPE");
-	const char *bus = getenv("ID_BUS");
-	if (type && streq(type, "cd"))
-		return ICON_TYPE_OPTICAL;
-	if (!bus)
-		return ICON_TYPE_UNKNOWN;
-	if (streq(bus, "usb"))
-		return ICON_TYPE_USB;
-	if (streq(bus, "ata") || streq(bus, "scsi"))
-		return ICON_TYPE_DISK;
-	return ICON_TYPE_UNKNOWN;
-}
-
-
-static int is_removable_device(const char *sysfs_path) 
-{
-	char full_path[PATH_MAX];
-	char buf[80];
-	int fd, buf_len;
-
-	sprintf(full_path, "/sys/%s/removable", sysfs_path);	
-	fd = open(full_path, O_RDONLY);
-	pb_log(" -> removable check on %s, fd=%d\n", full_path, fd);
-	if (fd < 0)
-		return 0;
-	buf_len = read(fd, buf, 79);
-	close(fd);
-	if (buf_len < 0)
-		return 0;
-	buf[buf_len] = 0;
-	return strtol(buf, NULL, 10);
-}
-
-static int is_ignored_device(const char *devname)
-{
-	static const char *ignored_devices[] =
-		{ "/dev/ram", "/dev/loop", NULL };
-	const char **dev;
-
-	for (dev = ignored_devices; *dev; dev++)
-		if (!strncmp(devname, *dev, strlen(*dev)))
-			return 1;
-
-	return 0;
-}
-
-static int found_new_device(const char *dev_path)
-{
-	const char *mountpoint = mountpoint_for_device(dev_path);
-
-	if (mount_device(dev_path)) {
-		pb_log("failed to mount %s\n", dev_path);
-		return EXIT_FAILURE;
-	}
-
-	pb_log("mounted %s at %s\n", dev_path, mountpoint);
-
-	iterate_parsers(dev_path, mountpoint);
-
-	return EXIT_SUCCESS;
-}
-
-static void detach_and_sleep(int sec)
-{
-	static int forked = 0;
-	int rc = 0;
-
-	if (sec <= 0)
-		return;
-
-	if (!forked) {
-		pb_log("running in background...");
-		rc = fork();
-		forked = 1;
-	}
-
-	if (rc == 0) {
-		sleep(sec);
-
-	} else if (rc == -1) {
-		perror("fork()");
-		exit(EXIT_FAILURE);
-	} else {
-		exit(EXIT_SUCCESS);
-	}
-}
-
-static int poll_device_plug(const char *dev_path,
-			    int *optical)
-{
-	int rc, fd;
-
-	/* Polling loop for optical drive */
-	for (; (*optical) != 0; ) {
-		fd = open(dev_path, O_RDONLY|O_NONBLOCK);
-		if (fd < 0)
-			return EXIT_FAILURE;
-		rc = ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
-		close(fd);
-		if (rc == -1)
-			break;
-
-		*optical = 1;
-		if (rc == CDS_DISC_OK)
-			return EXIT_SUCCESS;
-
-		detach_and_sleep(REMOVABLE_SLEEP_DELAY);
-	}
-
-	/* Fall back to bare open() */
-	*optical = 0;
-	for (;;) {
-		fd = open(dev_path, O_RDONLY);
-		if (fd < 0 && errno != ENOMEDIUM)
-			return EXIT_FAILURE;
-		close(fd);
-		if (fd >= 0)
-			return EXIT_SUCCESS;
-		detach_and_sleep(REMOVABLE_SLEEP_DELAY);
-	}
-}
-
-static int poll_device_unplug(const char *dev_path, int optical)
-{
-	int rc, fd;
-
-	for (;optical;) {
-		fd = open(dev_path, O_RDONLY|O_NONBLOCK);
-		if (fd < 0)
-			return EXIT_FAILURE;
-		rc = ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
-		close(fd);
-		if (rc != CDS_DISC_OK)
-			return EXIT_SUCCESS;
-		detach_and_sleep(REMOVABLE_SLEEP_DELAY);
-	}
-
-	/* Fall back to bare open() */
-	for (;;) {
-		fd = open(dev_path, O_RDONLY);
-		if (fd < 0 && errno != ENOMEDIUM)
-			return EXIT_FAILURE;
-		close(fd);
-		if (fd < 0)
-			return EXIT_SUCCESS;
-		detach_and_sleep(REMOVABLE_SLEEP_DELAY);
-	}
-}
-
-static int poll_removable_device(const char *sysfs_path,
-				 const char *dev_path)
-{
-	int rc, mounted, optical = -1;
-       
-	for (;;) {
-		rc = poll_device_plug(dev_path, &optical);
-		if (rc == EXIT_FAILURE)
-			return rc;
-		rc = found_new_device(dev_path);
-		mounted = (rc == EXIT_SUCCESS);
-
-		poll_device_unplug(dev_path, optical);
-
-		remove_device(dev_path);
-
-		/* Unmount it repeatedly, if needs be */
-		while (mounted && !unmount_device(dev_path))
-			;
-		detach_and_sleep(1);
-	}
-}
-
-int main(int argc, char **argv)
-{
-	char *dev_path, *action;
-	int rc;
-
-	action = getenv("ACTION");
-
-	logf = fopen("/var/log/petitboot-udev-helpers.log", "a");
-	if (!logf)
-		logf = stdout;
-	pb_log("%d started\n", getpid());
-	rc = EXIT_SUCCESS;
-
-	if (!action) {
-		pb_log("missing environment?\n");
-		return EXIT_FAILURE;
-	}
-
-	set_mount_base(TMP_DIR);
-
-	if (connect_to_socket())
-		return EXIT_FAILURE;
-
-	if (streq(action, "fake")) {
-		pb_log("fake mode");
-
-		add_device(&fake_boot_devices[0]);
-		add_boot_option(&fake_boot_options[0]);
-		add_boot_option(&fake_boot_options[1]);
-		add_boot_option(&fake_boot_options[2]);
-		add_device(&fake_boot_devices[1]);
-		add_boot_option(&fake_boot_options[3]);
-
-		return EXIT_SUCCESS;
-	}
-
-	dev_path = getenv("DEVNAME");
-	if (!dev_path) {
-		pb_log("missing environment?\n");
-		return EXIT_FAILURE;
-	}
-
-	if (is_ignored_device(dev_path))
-		return EXIT_SUCCESS;
-
-	if (streq(action, "add")) {
-		char *sysfs_path = getenv("DEVPATH");
-		if (sysfs_path && is_removable_device(sysfs_path))
-			rc = poll_removable_device(sysfs_path, dev_path);
-		else
-			rc = found_new_device(dev_path);
-	} else if (streq(action, "remove")) {
-		pb_log("%s removed\n", dev_path);
-
-		remove_device(dev_path);
-
-		/* Unmount it repeatedly, if needs be */
-		while (!unmount_device(dev_path))
-			;
-
-	} else {
-		pb_log("invalid action '%s'\n", action);
-		rc = EXIT_FAILURE;
-	}
-	return rc;
-}