The postal address is:
Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia.
*/
-
-//#include <sys/wait.h>
-//#include <sys/ioctl.h>
-//#include <sys/socket.h>
-#include <sys/un.h>
-#include <dirent.h>
-#include <syslog.h>
-#include <sys/sysmacros.h>
#include "libbb.h"
#include "xregex.h"
+#include <syslog.h>
+#include <sys/un.h>
+#include <sys/sysmacros.h>
/* Various defines taken from linux/major.h */
#define IDE0_MAJOR 3
static char *write_old_sd_name(char *, unsigned, unsigned, const char *);
/* busybox functions */
-static void do_ioctl_or_die(int fd, int request, unsigned long event_mask_flag);
static int get_uid_gid(int flag, const char *string);
static void safe_memcpy(char * dest, const char * src, int len);
static unsigned int scan_dev_name_common(const char *d, unsigned int n, int addendum, const char *ptr);
static char *mount_point = NULL;
static volatile int caught_signal = FALSE;
static volatile int caught_sighup = FALSE;
-static struct initial_symlink_struct
-{
+static struct initial_symlink_struct {
const char *dest;
const char *name;
-} initial_symlinks[] =
-{
+} initial_symlinks[] = {
{"/proc/self/fd", "fd"},
{"fd/0", "stdin"},
{"fd/1", "stdout"},
{NULL, NULL},
};
-static struct event_type
-{
+static struct event_type {
unsigned int type; /* The DEVFSD_NOTIFY_* value */
const char *config_name; /* The name used in the config file */
-} event_types[] =
-{
+} event_types[] = {
{DEVFSD_NOTIFY_REGISTERED, "REGISTER"},
{DEVFSD_NOTIFY_UNREGISTERED, "UNREGISTER"},
{DEVFSD_NOTIFY_ASYNC_OPEN, "ASYNC_OPEN"},
/* Busybox messages */
-static const char * const bb_msg_proto_rev = "protocol revision";
-static const char * const bb_msg_bad_config = "bad %s config file: %s";
-static const char * const bb_msg_small_buffer = "buffer too small";
-static const char * const bb_msg_variable_not_found = "variable: %s not found";
+static const char bb_msg_proto_rev[] ALIGN1 = "protocol revision";
+static const char bb_msg_bad_config[] ALIGN1 = "bad %s config file: %s";
+static const char bb_msg_small_buffer[] ALIGN1 = "buffer too small";
+static const char bb_msg_variable_not_found[] ALIGN1 = "variable: %s not found";
/* Busybox stuff */
#if ENABLE_DEVFSD_VERBOSE || ENABLE_DEBUG
#define error_logger_and_die(p, fmt, args...) exit(1)
#endif
-static void do_ioctl_or_die(int fd, int request, unsigned long event_mask_flag)
-{
- if (ioctl(fd, request, event_mask_flag) == -1)
- msg_logger_and_die(LOG_ERR, "ioctl");
-}
-
static void safe_memcpy(char *dest, const char *src, int len)
{
memcpy(dest , src, len);
/* Public functions follow */
-int devfsd_main(int argc, char **argv);
+int devfsd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int devfsd_main(int argc, char **argv)
{
int print_version = FALSE;
xchdir(mount_point);
fd = xopen(".devfsd", O_RDONLY);
-
- if (fcntl(fd, F_SETFD, FD_CLOEXEC) != 0)
- bb_perror_msg_and_die("FD_CLOEXEC");
-
- if (ioctl(fd, DEVFSDIOC_GET_PROTO_REV, &proto_rev) == -1)
- bb_perror_msg_and_die("ioctl");
+ close_on_exec_on(fd);
+ xioctl(fd, DEVFSDIOC_GET_PROTO_REV, &proto_rev);
/*setup initial entries */
for (curr = initial_symlinks; curr->dest != NULL; ++curr)
/* NB: The check for CONFIG_FILE is done in read_config_file() */
- if (print_version ||(DEVFSD_PROTOCOL_REVISION_DAEMON != proto_rev)) {
+ if (print_version || (DEVFSD_PROTOCOL_REVISION_DAEMON != proto_rev)) {
printf("%s v%s\nDaemon %s:\t%d\nKernel-side %s:\t%d\n",
applet_name, DEVFSD_VERSION, bb_msg_proto_rev,
- DEVFSD_PROTOCOL_REVISION_DAEMON,bb_msg_proto_rev, proto_rev);
+ DEVFSD_PROTOCOL_REVISION_DAEMON, bb_msg_proto_rev, proto_rev);
if (DEVFSD_PROTOCOL_REVISION_DAEMON != proto_rev)
bb_error_msg_and_die("%s mismatch!", bb_msg_proto_rev);
exit(EXIT_SUCCESS); /* -v */
}
/* Tell kernel we are special(i.e. we get to see hidden entries) */
- do_ioctl_or_die(fd, DEVFSDIOC_SET_EVENT_MASK, 0);
+ xioctl(fd, DEVFSDIOC_SET_EVENT_MASK, 0);
+ /* Set up SIGHUP and SIGUSR1 handlers */
sigemptyset(&new_action.sa_mask);
new_action.sa_flags = 0;
-
- /* Set up SIGHUP and SIGUSR1 handlers */
new_action.sa_handler = signal_handler;
- if (sigaction(SIGHUP, &new_action, NULL) != 0 || sigaction(SIGUSR1, &new_action, NULL) != 0)
- bb_error_msg_and_die("sigaction");
+ sigaction_set(SIGHUP, &new_action);
+ sigaction_set(SIGUSR1, &new_action);
- printf("%s v%s started for %s\n",applet_name, DEVFSD_VERSION, mount_point);
+ printf("%s v%s started for %s\n", applet_name, DEVFSD_VERSION, mount_point);
/* Set umask so that mknod(2), open(2) and mkdir(2) have complete control over permissions */
umask(0);
if (ENABLE_DEVFSD_FG_NP && no_polling)
exit(0);
-
+
if (ENABLE_DEVFSD_VERBOSE || ENABLE_DEBUG)
logmode = LOGMODE_BOTH;
else if (do_daemon == TRUE)
if (do_daemon) {
/* Release so that the child can grab it */
- do_ioctl_or_die(fd, DEVFSDIOC_RELEASE_EVENT_QUEUE, 0);
+ xioctl(fd, DEVFSDIOC_RELEASE_EVENT_QUEUE, 0);
bb_daemonize_or_rexec(0, argv);
} else if (ENABLE_DEVFSD_FG_NP) {
setpgid(0, 0); /* Become process group leader */
}
-
+
while (TRUE) {
do_scan = do_servicing(fd, event_mask);
free(p);
return;
}
- if ((fp = fopen(path, "r")) != NULL) {
+ fp = fopen(path, "r");
+ if (fp != NULL) {
while (fgets(buf, STRING_LENGTH, fp) != NULL) {
/* Skip whitespace */
line = buf;
int i;
/* !!!! Only Uppercase Keywords in devsfd.conf */
- static const char *const options[] = {
- "CLEAR_CONFIG", "INCLUDE", "OPTIONAL_INCLUDE",
- "RESTORE", "PERMISSIONS", "MODLOAD", "EXECUTE",
- "COPY", "IGNORE", "MKOLDCOMPAT", "MKNEWCOMPAT",
- "RMOLDCOMPAT", "RMNEWCOMPAT", 0
- };
+ static const char options[] ALIGN1 =
+ "CLEAR_CONFIG\0""INCLUDE\0""OPTIONAL_INCLUDE\0"
+ "RESTORE\0""PERMISSIONS\0""MODLOAD\0""EXECUTE\0"
+ "COPY\0""IGNORE\0""MKOLDCOMPAT\0""MKNEWCOMPAT\0"
+ "RMOLDCOMPAT\0""RMNEWCOMPAT\0";
for (count = 0; count < MAX_ARGS; ++count)
p[count][0] = '\0';
when, name, what,
p[0], p[1], p[2], p[3], p[4], p[5], p[6]);
- i = index_in_str_array(options, when);
+ i = index_in_strings(options, when);
- /*"CLEAR_CONFIG"*/
+ /* "CLEAR_CONFIG" */
if (i == 0) {
free_config();
*event_mask = 0;
goto process_config_line_err;
}
- i = index_in_str_array(options, what);
+ i = index_in_strings(options, what);
switch (i) {
case 4: /* "PERMISSIONS" */
new->action.what = AC_PERMISSIONS;
/* Get user and group */
- if ((ptr = strchr(p[0], '.')) == NULL) {
+ ptr = strchr(p[0], '.');
+ if (ptr == NULL) {
msg = "UID.GID";
goto process_config_line_err; /*"missing '.' in UID.GID"*/
}
last_config->next = new;
last_config = new;
return;
-process_config_line_err:
+
+ process_config_line_err:
msg_logger_and_die(LOG_ERR, bb_msg_bad_config, msg , line);
} /* End Function process_config_line */
{
ssize_t bytes;
struct devfsd_notify_struct info;
- unsigned long tmp_event_mask;
- /* Tell devfs what events we care about */
- tmp_event_mask = event_mask;
- do_ioctl_or_die(fd, DEVFSDIOC_SET_EVENT_MASK, tmp_event_mask);
+ /* (void*) cast is only in order to match prototype */
+ xioctl(fd, DEVFSDIOC_SET_EVENT_MASK, (void*)event_mask);
while (!caught_signal) {
errno = 0;
bytes = read(fd,(char *) &info, sizeof info);
msg_logger(LOG_ERR, "lost %u events", info->overrun_count);
/* Discard lookups on "/dev/log" and "/dev/initctl" */
- if (info->type == DEVFSD_NOTIFY_LOOKUP
+ if (info->type == DEVFSD_NOTIFY_LOOKUP
&& ((info->devname[0] == 'l' && info->devname[1] == 'o'
- && info->devname[2] == 'g' && !info->devname[3])
+ && info->devname[2] == 'g' && !info->devname[3])
|| (info->devname[0] == 'i' && info->devname[1] == 'n'
&& info->devname[2] == 'i' && info->devname[3] == 't'
&& info->devname[4] == 'c' && info->devname[5] == 't'
for (entry = first_config; entry != NULL; entry = entry->next) {
/* First check if action matches the type, then check if name matches */
- if (info->type != entry->action.when
+ if (info->type != entry->action.when
|| regexec(&entry->preg, info->devname, MAX_SUBEXPR, mbuf, 0) != 0)
continue;
for (n = 0;(n < MAX_SUBEXPR) && (mbuf[n].rm_so != -1); ++n)
if ((source_stat->st_mode & S_IFMT) ==(dest_stat->st_mode & S_IFMT)) {
/* Same type */
if (S_ISLNK(source_stat->st_mode)) {
- if ((source_len = readlink(sourcepath, source_link, STRING_LENGTH - 1)) < 0
- || (dest_len = readlink(destpath , dest_link , STRING_LENGTH - 1)) < 0
+ source_len = readlink(sourcepath, source_link, STRING_LENGTH - 1);
+ if ((source_len < 0)
+ || (dest_len = readlink(destpath, dest_link, STRING_LENGTH - 1)) < 0
)
return FALSE;
source_link[source_len] = '\0';
unlink(destpath);
switch (source_stat->st_mode & S_IFMT) {
case S_IFSOCK:
- if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
+ fd = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (fd < 0)
break;
un_addr.sun_family = AF_UNIX;
snprintf(un_addr.sun_path, sizeof(un_addr.sun_path), "%s", destpath);
break;
goto do_chown;
case S_IFLNK:
- if ((val = readlink(sourcepath, symlink_val, STRING_LENGTH - 1)) < 0)
+ val = readlink(sourcepath, symlink_val, STRING_LENGTH - 1);
+ if (val < 0)
break;
symlink_val[val] = '\0';
if (symlink(symlink_val, destpath) == 0)
return TRUE;
break;
case S_IFREG:
- if ((fd = open(destpath, O_RDONLY | O_CREAT, new_mode & ~S_IFMT)) < 0)
+ fd = open(destpath, O_RDONLY | O_CREAT, new_mode & ~S_IFMT);
+ if (fd < 0)
break;
close(fd);
if (chmod(destpath, new_mode & ~S_IFMT) != 0)
if (isdigit(string[0]) ||((string[0] == '-') && isdigit(string[1])))
return atoi(string);
- if (flag == UID && (pw_ent = getpwnam(string)) != NULL)
+ if (flag == UID && (pw_ent = getpwnam(string)) != NULL)
return pw_ent->pw_uid;
if (flag == GID && (grp_ent = getgrnam(string)) != NULL)
static const char *get_variable(const char *variable, void *info)
{
+ static char sbuf[sizeof(int)*3 + 2]; /* sign and NUL */
+ static char *hostname;
+
struct get_variable_info *gv_info = info;
- static char hostname[STRING_LENGTH], sbuf[STRING_LENGTH];
- const char *field_names[] = { "hostname", "mntpt", "devpath", "devname",
- "uid", "gid", "mode", hostname, mount_point,
- gv_info->devpath, gv_info->devname, 0 };
+ const char *field_names[] = {
+ "hostname", "mntpt", "devpath", "devname",
+ "uid", "gid", "mode", hostname, mount_point,
+ gv_info->devpath, gv_info->devname, NULL
+ };
int i;
- if (gethostname(hostname, STRING_LENGTH - 1) != 0)
- error_logger_and_die(LOG_ERR, "gethostname");
-
- /* Here on error we should do exit(RV_SYS_ERROR), instead we do exit(EXIT_FAILURE) */
- hostname[STRING_LENGTH - 1] = '\0';
-
+ if (!hostname)
+ hostname = safe_gethostname();
/* index_in_str_array returns i>=0 */
i = index_in_str_array(field_names, variable);
if (i > 6 || i < 0 || (i > 1 && gv_info == NULL))
- return NULL;
- if (i >= 0 && i <= 3) {
+ return NULL;
+ if (i >= 0 && i <= 3)
return field_names[i + 7];
- }
if (i == 4)
sprintf(sbuf, "%u", gv_info->info->uid);
struct dirent *de;
char *path;
- if ((dp = warn_opendir(dir_name)) == NULL)
+ dp = warn_opendir(dir_name);
+ if (dp == NULL)
return;
while ((de = readdir(dp)) != NULL) {
ch = input[1];
if (isspace(ch) ||(ch == '/') ||(ch == '\0')) {
/* User's own home directory: leave separator for next time */
- if ((env = getenv("HOME")) == NULL) {
+ env = getenv("HOME");
+ if (env == NULL) {
info_logger(LOG_INFO, bb_msg_variable_not_found, "HOME");
return FALSE;
}
}
/* Someone else's home directory */
for (ptr = ++input; !isspace(ch) && (ch != '/') && (ch != '\0'); ch = *++ptr)
- /* VOID */ ;
+ /* VOID */;
len = ptr - input;
if (len >= sizeof tmp)
goto st_expr_expand_out;
safe_memcpy(tmp, input, len);
input = ptr - 1;
- if ((pwent = getpwnam(tmp)) == NULL) {
+ pwent = getpwnam(tmp);
+ if (pwent == NULL) {
info_logger(LOG_INFO, "no pwent for: %s", tmp);
return FALSE;
}
if (ch != '{') {
/* Simple variable expansion */
for (ptr = input; isalnum(ch) || (ch == '_') || (ch == ':'); ch = *++ptr)
- /* VOID */ ;
+ /* VOID */;
len = ptr - input;
if ((size_t)len >= sizeof tmp)
goto expand_variable_out;
safe_memcpy(tmp, input, len);
input = ptr - 1;
- if ((env = get_variable_v2(tmp, func, info)) == NULL) {
+ env = get_variable_v2(tmp, func, info);
+ if (env == NULL) {
info_logger(LOG_INFO, bb_msg_variable_not_found, tmp);
return NULL;
}
}
--ptr;
/* At this point ptr should point to closing brace of "${var:-word}" */
- if ((env = get_variable_v2(tmp, func, info)) != NULL) {
+ env = get_variable_v2(tmp, func, info);
+ if (env != NULL) {
/* Found environment variable, so skip the input to the closing brace
and return the variable */
input = ptr;
projects / oweals / busybox.git / blobdiff