#include "sd-daemon.h"
int sd_listen_fds(int unset_environment) {
-
#if defined(DISABLE_SYSTEMD) || !defined(__linux__)
- return 0;
+ return 0;
#else
- int r, fd;
- const char *e;
- char *p = NULL;
- unsigned long l;
-
- if (!(e = getenv("LISTEN_PID"))) {
- r = 0;
- goto finish;
- }
-
- errno = 0;
- l = strtoul(e, &p, 10);
-
- if (errno != 0) {
- r = -errno;
- goto finish;
- }
-
- if (!p || *p || l <= 0) {
- r = -EINVAL;
- goto finish;
- }
-
- /* Is this for us? */
- if (getpid() != (pid_t) l) {
- r = 0;
- goto finish;
- }
-
- if (!(e = getenv("LISTEN_FDS"))) {
- r = 0;
- goto finish;
+ int r, fd;
+ const char *e;
+ char *p = NULL;
+ unsigned long l;
+
+ if (!(e = getenv("LISTEN_PID"))) {
+ r = 0;
+ goto finish;
+ }
+
+ errno = 0;
+ l = strtoul(e, &p, 10);
+
+ if (errno != 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ if (!p || *p || l <= 0) {
+ r = -EINVAL;
+ goto finish;
+ }
+
+ /* Is this for us? */
+ if (getpid() != (pid_t)l) {
+ r = 0;
+ goto finish;
+ }
+
+ if (!(e = getenv("LISTEN_FDS"))) {
+ r = 0;
+ goto finish;
+ }
+
+ errno = 0;
+ l = strtoul(e, &p, 10);
+
+ if (errno != 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ if (!p || *p) {
+ r = -EINVAL;
+ goto finish;
+ }
+
+ for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + (int)l; fd++) {
+ int flags;
+
+ if ((flags = fcntl(fd, F_GETFD)) < 0) {
+ r = -errno;
+ goto finish;
}
- errno = 0;
- l = strtoul(e, &p, 10);
+ if (flags & FD_CLOEXEC)
+ continue;
- if (errno != 0) {
- r = -errno;
- goto finish;
+ if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) < 0) {
+ r = -errno;
+ goto finish;
}
+ }
- if (!p || *p) {
- r = -EINVAL;
- goto finish;
- }
-
- for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + (int) l; fd ++) {
- int flags;
-
- if ((flags = fcntl(fd, F_GETFD)) < 0) {
- r = -errno;
- goto finish;
- }
-
- if (flags & FD_CLOEXEC)
- continue;
-
- if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) < 0) {
- r = -errno;
- goto finish;
- }
- }
-
- r = (int) l;
+ r = (int)l;
finish:
- if (unset_environment) {
- unsetenv("LISTEN_PID");
- unsetenv("LISTEN_FDS");
- }
+ if (unset_environment) {
+ unsetenv("LISTEN_PID");
+ unsetenv("LISTEN_FDS");
+ }
- return r;
+ return r;
#endif
}
int sd_is_fifo(int fd, const char *path) {
- struct stat st_fd;
+ struct stat st_fd;
- if (fd < 0)
- return -EINVAL;
+ if (fd < 0)
+ return -EINVAL;
- memset(&st_fd, 0, sizeof(st_fd));
- if (fstat(fd, &st_fd) < 0)
- return -errno;
+ memset(&st_fd, 0, sizeof(st_fd));
+ if (fstat(fd, &st_fd) < 0)
+ return -errno;
- if (!S_ISFIFO(st_fd.st_mode))
- return 0;
-
- if (path) {
- struct stat st_path;
-
- memset(&st_path, 0, sizeof(st_path));
- if (stat(path, &st_path) < 0) {
+ if (!S_ISFIFO(st_fd.st_mode))
+ return 0;
- if (errno == ENOENT || errno == ENOTDIR)
- return 0;
+ if (path) {
+ struct stat st_path;
- return -errno;
- }
+ memset(&st_path, 0, sizeof(st_path));
+ if (stat(path, &st_path) < 0) {
+ if (errno == ENOENT || errno == ENOTDIR)
+ return 0;
- return
- st_path.st_dev == st_fd.st_dev &&
- st_path.st_ino == st_fd.st_ino;
+ return -errno;
}
- return 1;
+ return st_path.st_dev == st_fd.st_dev &&
+ st_path.st_ino == st_fd.st_ino;
+ }
+
+ return 1;
}
static int sd_is_socket_internal(int fd, int type, int listening) {
- struct stat st_fd;
+ struct stat st_fd;
- if (fd < 0 || type < 0)
- return -EINVAL;
+ if (fd < 0 || type < 0)
+ return -EINVAL;
- if (fstat(fd, &st_fd) < 0)
- return -errno;
+ if (fstat(fd, &st_fd) < 0)
+ return -errno;
- if (!S_ISSOCK(st_fd.st_mode))
- return 0;
+ if (!S_ISSOCK(st_fd.st_mode))
+ return 0;
- if (type != 0) {
- int other_type = 0;
- socklen_t l = sizeof(other_type);
+ if (type != 0) {
+ int other_type = 0;
+ socklen_t l = sizeof(other_type);
- if (getsockopt(fd, SOL_SOCKET, SO_TYPE, &other_type, &l) < 0)
- return -errno;
+ if (getsockopt(fd, SOL_SOCKET, SO_TYPE, &other_type, &l) < 0)
+ return -errno;
- if (l != sizeof(other_type))
- return -EINVAL;
+ if (l != sizeof(other_type))
+ return -EINVAL;
- if (other_type != type)
- return 0;
- }
+ if (other_type != type)
+ return 0;
+ }
- if (listening >= 0) {
- int accepting = 0;
- socklen_t l = sizeof(accepting);
+ if (listening >= 0) {
+ int accepting = 0;
+ socklen_t l = sizeof(accepting);
- if (getsockopt(fd, SOL_SOCKET, SO_ACCEPTCONN, &accepting, &l) < 0)
- return -errno;
+ if (getsockopt(fd, SOL_SOCKET, SO_ACCEPTCONN, &accepting, &l) < 0)
+ return -errno;
- if (l != sizeof(accepting))
- return -EINVAL;
+ if (l != sizeof(accepting))
+ return -EINVAL;
- if (!accepting != !listening)
- return 0;
- }
+ if (!accepting != !listening)
+ return 0;
+ }
- return 1;
+ return 1;
}
union sockaddr_union {
- struct sockaddr sa;
- struct sockaddr_in in4;
- struct sockaddr_in6 in6;
- struct sockaddr_un un;
- struct sockaddr_storage storage;
+ struct sockaddr sa;
+ struct sockaddr_in in4;
+ struct sockaddr_in6 in6;
+ struct sockaddr_un un;
+ struct sockaddr_storage storage;
};
int sd_is_socket(int fd, int family, int type, int listening) {
- int r;
+ int r;
- if (family < 0)
- return -EINVAL;
+ if (family < 0)
+ return -EINVAL;
- if ((r = sd_is_socket_internal(fd, type, listening)) <= 0)
- return r;
+ if ((r = sd_is_socket_internal(fd, type, listening)) <= 0)
+ return r;
- if (family > 0) {
- union sockaddr_union sockaddr;
- socklen_t l;
+ if (family > 0) {
+ union sockaddr_union sockaddr;
+ socklen_t l;
- memset(&sockaddr, 0, sizeof(sockaddr));
- l = sizeof(sockaddr);
+ memset(&sockaddr, 0, sizeof(sockaddr));
+ l = sizeof(sockaddr);
- if (getsockname(fd, &sockaddr.sa, &l) < 0)
- return -errno;
+ if (getsockname(fd, &sockaddr.sa, &l) < 0)
+ return -errno;
- if (l < sizeof(sa_family_t))
- return -EINVAL;
+ if (l < sizeof(sa_family_t))
+ return -EINVAL;
- return sockaddr.sa.sa_family == family;
- }
+ return sockaddr.sa.sa_family == family;
+ }
- return 1;
+ return 1;
}
int sd_is_socket_inet(int fd, int family, int type, int listening, uint16_t port) {
- union sockaddr_union sockaddr;
- socklen_t l;
- int r;
+ union sockaddr_union sockaddr;
+ socklen_t l;
+ int r;
- if (family != 0 && family != AF_INET && family != AF_INET6)
- return -EINVAL;
+ if (family != 0 && family != AF_INET && family != AF_INET6)
+ return -EINVAL;
- if ((r = sd_is_socket_internal(fd, type, listening)) <= 0)
- return r;
+ if ((r = sd_is_socket_internal(fd, type, listening)) <= 0)
+ return r;
- memset(&sockaddr, 0, sizeof(sockaddr));
- l = sizeof(sockaddr);
+ memset(&sockaddr, 0, sizeof(sockaddr));
+ l = sizeof(sockaddr);
- if (getsockname(fd, &sockaddr.sa, &l) < 0)
- return -errno;
+ if (getsockname(fd, &sockaddr.sa, &l) < 0)
+ return -errno;
- if (l < sizeof(sa_family_t))
- return -EINVAL;
+ if (l < sizeof(sa_family_t))
+ return -EINVAL;
- if (sockaddr.sa.sa_family != AF_INET &&
- sockaddr.sa.sa_family != AF_INET6)
- return 0;
+ if (sockaddr.sa.sa_family != AF_INET &&
+ sockaddr.sa.sa_family != AF_INET6)
+ return 0;
- if (family > 0)
- if (sockaddr.sa.sa_family != family)
- return 0;
+ if (family > 0)
+ if (sockaddr.sa.sa_family != family)
+ return 0;
- if (port > 0) {
- if (sockaddr.sa.sa_family == AF_INET) {
- if (l < sizeof(struct sockaddr_in))
- return -EINVAL;
+ if (port > 0) {
+ if (sockaddr.sa.sa_family == AF_INET) {
+ if (l < sizeof(struct sockaddr_in))
+ return -EINVAL;
- return htons(port) == sockaddr.in4.sin_port;
- } else {
- if (l < sizeof(struct sockaddr_in6))
- return -EINVAL;
+ return htons(port) == sockaddr.in4.sin_port;
+ } else {
+ if (l < sizeof(struct sockaddr_in6))
+ return -EINVAL;
- return htons(port) == sockaddr.in6.sin6_port;
- }
+ return htons(port) == sockaddr.in6.sin6_port;
}
+ }
- return 1;
+ return 1;
}
int sd_is_socket_unix(int fd, int type, int listening, const char *path, size_t length) {
- union sockaddr_union sockaddr;
- socklen_t l;
- int r;
-
- if ((r = sd_is_socket_internal(fd, type, listening)) <= 0)
- return r;
+ union sockaddr_union sockaddr;
+ socklen_t l;
+ int r;
- memset(&sockaddr, 0, sizeof(sockaddr));
- l = sizeof(sockaddr);
+ if ((r = sd_is_socket_internal(fd, type, listening)) <= 0)
+ return r;
- if (getsockname(fd, &sockaddr.sa, &l) < 0)
- return -errno;
+ memset(&sockaddr, 0, sizeof(sockaddr));
+ l = sizeof(sockaddr);
- if (l < sizeof(sa_family_t))
- return -EINVAL;
+ if (getsockname(fd, &sockaddr.sa, &l) < 0)
+ return -errno;
- if (sockaddr.sa.sa_family != AF_UNIX)
- return 0;
+ if (l < sizeof(sa_family_t))
+ return -EINVAL;
- if (path) {
- if (length <= 0)
- length = strlen(path);
-
- if (length <= 0)
- /* Unnamed socket */
- return l == offsetof(struct sockaddr_un, sun_path);
-
- if (path[0])
- /* Normal path socket */
- return
- (l >= offsetof(struct sockaddr_un, sun_path) + length + 1) &&
- memcmp(path, sockaddr.un.sun_path, length+1) == 0;
- else
- /* Abstract namespace socket */
- return
- (l == offsetof(struct sockaddr_un, sun_path) + length) &&
- memcmp(path, sockaddr.un.sun_path, length) == 0;
- }
+ if (sockaddr.sa.sa_family != AF_UNIX)
+ return 0;
- return 1;
+ if (path) {
+ if (length <= 0)
+ length = strlen(path);
+
+ if (length <= 0)
+ /* Unnamed socket */
+ return l == offsetof(struct sockaddr_un, sun_path);
+
+ if (path[0])
+ /* Normal path socket */
+ return (l >= offsetof(struct sockaddr_un, sun_path) + length + 1) &&
+ memcmp(path, sockaddr.un.sun_path, length + 1) == 0;
+ else
+ /* Abstract namespace socket */
+ return (l == offsetof(struct sockaddr_un, sun_path) + length) &&
+ memcmp(path, sockaddr.un.sun_path, length) == 0;
+ }
+
+ return 1;
}
int sd_notify(int unset_environment, const char *state) {
#if defined(DISABLE_SYSTEMD) || !defined(__linux__) || !defined(SOCK_CLOEXEC)
- return 0;
+ return 0;
#else
- int fd = -1, r;
- struct msghdr msghdr;
- struct iovec iovec;
- union sockaddr_union sockaddr;
- const char *e;
+ int fd = -1, r;
+ struct msghdr msghdr;
+ struct iovec iovec;
+ union sockaddr_union sockaddr;
+ const char *e;
+
+ if (!state) {
+ r = -EINVAL;
+ goto finish;
+ }
+
+ if (!(e = getenv("NOTIFY_SOCKET")))
+ return 0;
- if (!state) {
- r = -EINVAL;
- goto finish;
- }
+ /* Must be an abstract socket, or an absolute path */
+ if ((e[0] != '@' && e[0] != '/') || e[1] == 0) {
+ r = -EINVAL;
+ goto finish;
+ }
- if (!(e = getenv("NOTIFY_SOCKET")))
- return 0;
+ if ((fd = socket(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC, 0)) < 0) {
+ r = -errno;
+ goto finish;
+ }
- /* Must be an abstract socket, or an absolute path */
- if ((e[0] != '@' && e[0] != '/') || e[1] == 0) {
- r = -EINVAL;
- goto finish;
- }
+ memset(&sockaddr, 0, sizeof(sockaddr));
+ sockaddr.sa.sa_family = AF_UNIX;
+ strncpy(sockaddr.un.sun_path, e, sizeof(sockaddr.un.sun_path));
- if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0) {
- r = -errno;
- goto finish;
- }
+ if (sockaddr.un.sun_path[0] == '@')
+ sockaddr.un.sun_path[0] = 0;
- memset(&sockaddr, 0, sizeof(sockaddr));
- sockaddr.sa.sa_family = AF_UNIX;
- strncpy(sockaddr.un.sun_path, e, sizeof(sockaddr.un.sun_path));
+ memset(&iovec, 0, sizeof(iovec));
+ iovec.iov_base = (char *)state;
+ iovec.iov_len = strlen(state);
- if (sockaddr.un.sun_path[0] == '@')
- sockaddr.un.sun_path[0] = 0;
+ memset(&msghdr, 0, sizeof(msghdr));
+ msghdr.msg_name = &sockaddr;
+ msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + strlen(e);
- memset(&iovec, 0, sizeof(iovec));
- iovec.iov_base = (char*) state;
- iovec.iov_len = strlen(state);
+ if (msghdr.msg_namelen > sizeof(struct sockaddr_un))
+ msghdr.msg_namelen = sizeof(struct sockaddr_un);
- memset(&msghdr, 0, sizeof(msghdr));
- msghdr.msg_name = &sockaddr;
- msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + strlen(e);
+ msghdr.msg_iov = &iovec;
+ msghdr.msg_iovlen = 1;
- if (msghdr.msg_namelen > sizeof(struct sockaddr_un))
- msghdr.msg_namelen = sizeof(struct sockaddr_un);
+ if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) {
+ r = -errno;
+ goto finish;
+ }
- msghdr.msg_iov = &iovec;
- msghdr.msg_iovlen = 1;
-
- if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) {
- r = -errno;
- goto finish;
- }
-
- r = 1;
+ r = 1;
finish:
- if (unset_environment)
- unsetenv("NOTIFY_SOCKET");
+ if (unset_environment)
+ unsetenv("NOTIFY_SOCKET");
- if (fd >= 0)
- close(fd);
+ if (fd >= 0)
+ close(fd);
- return r;
+ return r;
#endif
}
int sd_notifyf(int unset_environment, const char *format, ...) {
#if defined(DISABLE_SYSTEMD) || !defined(__linux__)
- return 0;
+ return 0;
#else
- va_list ap;
- char *p = NULL;
- int r;
+ va_list ap;
+ char *p = NULL;
+ int r;
- va_start(ap, format);
- r = vasprintf(&p, format, ap);
- va_end(ap);
+ va_start(ap, format);
+ r = vasprintf(&p, format, ap);
+ va_end(ap);
- if (r < 0 || !p)
- return -ENOMEM;
+ if (r < 0 || !p)
+ return -ENOMEM;
- r = sd_notify(unset_environment, p);
- free(p);
+ r = sd_notify(unset_environment, p);
+ free(p);
- return r;
+ return r;
#endif
}
int sd_booted(void) {
#if defined(DISABLE_SYSTEMD) || !defined(__linux__)
- return 0;
+ return 0;
#else
- struct stat a, b;
+ struct stat a, b;
- /* We simply test whether the systemd cgroup hierarchy is
+ /* We simply test whether the systemd cgroup hierarchy is
* mounted */
- if (lstat("/sys/fs/cgroup", &a) < 0)
- return 0;
+ if (lstat("/sys/fs/cgroup", &a) < 0)
+ return 0;
- if (lstat("/sys/fs/cgroup/systemd", &b) < 0)
- return 0;
+ if (lstat("/sys/fs/cgroup/systemd", &b) < 0)
+ return 0;
- return a.st_dev != b.st_dev;
+ return a.st_dev != b.st_dev;
#endif
}
projects / i3 / i3 / blobdiff