#include <linux/kd.h>
#include <dlfcn.h>
#include <sys/wait.h>
+#include <sys/capability.h>
+#include <sys/time.h>
+#include <linux/rtc.h>
+#include <glob.h>
+#include <grp.h>
#include "macro.h"
#include "util.h"
#include "exit-status.h"
#include "hashmap.h"
+int saved_argc = 0;
+char **saved_argv = NULL;
+
+size_t page_size(void) {
+ static __thread size_t pgsz = 0;
+ long r;
+
+ if (_likely_(pgsz))
+ return pgsz;
+
+ assert_se((r = sysconf(_SC_PAGESIZE)) > 0);
+
+ pgsz = (size_t) r;
+
+ return pgsz;
+}
+
bool streq_ptr(const char *a, const char *b) {
/* Like streq(), but tries to make sense of NULL pointers */
return ts;
}
+dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u) {
+ int64_t delta;
+ assert(ts);
+
+ ts->realtime = u;
+
+ if (u == 0)
+ ts->monotonic = 0;
+ else {
+ delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u;
+
+ ts->monotonic = now(CLOCK_MONOTONIC);
+
+ if ((int64_t) ts->monotonic > delta)
+ ts->monotonic -= delta;
+ else
+ ts->monotonic = 0;
+ }
+
+ return ts;
+}
+
usec_t timespec_load(const struct timespec *ts) {
assert(ts);
for (;;) {
int r;
- if ((r = close(fd)) >= 0)
+ r = close(fd);
+ if (r >= 0)
return r;
if (errno != EINTR)
- return r;
+ return -errno;
}
}
return 0;
}
+int parse_uid(const char *s, uid_t* ret_uid) {
+ unsigned long ul = 0;
+ uid_t uid;
+ int r;
+
+ assert(s);
+ assert(ret_uid);
+
+ if ((r = safe_atolu(s, &ul)) < 0)
+ return r;
+
+ uid = (uid_t) ul;
+
+ if ((unsigned long) uid != ul)
+ return -ERANGE;
+
+ *ret_uid = uid;
+ return 0;
+}
+
int safe_atou(const char *s, unsigned *ret_u) {
char *x = NULL;
unsigned long l;
int get_parent_of_pid(pid_t pid, pid_t *_ppid) {
int r;
FILE *f;
- char fn[132], line[256], *p;
+ char fn[PATH_MAX], line[LINE_MAX], *p;
long unsigned ppid;
- assert(pid >= 0);
+ assert(pid > 0);
assert(_ppid);
assert_se(snprintf(fn, sizeof(fn)-1, "/proc/%lu/stat", (unsigned long) pid) < (int) (sizeof(fn)-1));
- fn[sizeof(fn)-1] = 0;
+ char_array_0(fn);
- if (!(f = fopen(fn, "r")))
+ if (!(f = fopen(fn, "re")))
return -errno;
if (!(fgets(line, sizeof(line), f))) {
return 0;
}
+int get_starttime_of_pid(pid_t pid, unsigned long long *st) {
+ int r;
+ FILE *f;
+ char fn[PATH_MAX], line[LINE_MAX], *p;
+
+ assert(pid > 0);
+ assert(st);
+
+ assert_se(snprintf(fn, sizeof(fn)-1, "/proc/%lu/stat", (unsigned long) pid) < (int) (sizeof(fn)-1));
+ char_array_0(fn);
+
+ if (!(f = fopen(fn, "re")))
+ return -errno;
+
+ if (!(fgets(line, sizeof(line), f))) {
+ r = -errno;
+ fclose(f);
+ return r;
+ }
+
+ fclose(f);
+
+ /* Let's skip the pid and comm fields. The latter is enclosed
+ * in () but does not escape any () in its value, so let's
+ * skip over it manually */
+
+ if (!(p = strrchr(line, ')')))
+ return -EIO;
+
+ p++;
+
+ if (sscanf(p, " "
+ "%*c " /* state */
+ "%*d " /* ppid */
+ "%*d " /* pgrp */
+ "%*d " /* session */
+ "%*d " /* tty_nr */
+ "%*d " /* tpgid */
+ "%*u " /* flags */
+ "%*u " /* minflt */
+ "%*u " /* cminflt */
+ "%*u " /* majflt */
+ "%*u " /* cmajflt */
+ "%*u " /* utime */
+ "%*u " /* stime */
+ "%*d " /* cutime */
+ "%*d " /* cstime */
+ "%*d " /* priority */
+ "%*d " /* nice */
+ "%*d " /* num_threads */
+ "%*d " /* itrealvalue */
+ "%llu " /* starttime */,
+ st) != 1)
+ return -EIO;
+
+ return 0;
+}
+
int write_one_line_file(const char *fn, const char *line) {
FILE *f;
int r;
if (!(f = fopen(fn, "we")))
return -errno;
+ errno = 0;
if (fputs(line, f) < 0) {
r = -errno;
goto finish;
if (!endswith(line, "\n"))
fputc('\n', f);
- r = 0;
+ fflush(f);
+
+ if (ferror(f)) {
+ if (errno != 0)
+ r = -errno;
+ else
+ r = -EIO;
+ } else
+ r = 0;
+
+finish:
+ fclose(f);
+ return r;
+}
+
+int fchmod_umask(int fd, mode_t m) {
+ mode_t u;
+ int r;
+
+ u = umask(0777);
+ r = fchmod(fd, m & (~u)) < 0 ? -errno : 0;
+ umask(u);
+
+ return r;
+}
+
+int write_one_line_file_atomic(const char *fn, const char *line) {
+ FILE *f;
+ int r;
+ char *p;
+
+ assert(fn);
+ assert(line);
+
+ r = fopen_temporary(fn, &f, &p);
+ if (r < 0)
+ return r;
+
+ fchmod_umask(fileno(f), 0644);
+
+ errno = 0;
+ if (fputs(line, f) < 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ if (!endswith(line, "\n"))
+ fputc('\n', f);
+
+ fflush(f);
+
+ if (ferror(f)) {
+ if (errno != 0)
+ r = -errno;
+ else
+ r = -EIO;
+ } else {
+ if (rename(p, fn) < 0)
+ r = -errno;
+ else
+ r = 0;
+ }
+
finish:
+ if (r < 0)
+ unlink(p);
+
fclose(f);
+ free(p);
+
return r;
}
goto finish;
}
+ truncate_nl(c);
+
*line = c;
r = 0;
return r;
}
-int read_full_file(const char *fn, char **contents) {
+int read_full_file(const char *fn, char **contents, size_t *size) {
FILE *f;
int r;
size_t n, l;
goto finish;
}
+ /* Safety check */
+ if (st.st_size > 4*1024*1024) {
+ r = -E2BIG;
+ goto finish;
+ }
+
n = st.st_size > 0 ? st.st_size : LINE_MAX;
l = 0;
*contents = buf;
buf = NULL;
+ if (size)
+ *size = l;
+
r = 0;
finish:
const char *separator, ...) {
int r = 0;
- char *contents, *p;
+ char *contents = NULL, *p;
assert(fname);
assert(separator);
- if ((r = read_full_file(fname, &contents)) < 0)
+ if ((r = read_full_file(fname, &contents, NULL)) < 0)
return r;
p = contents;
return r;
}
+int write_env_file(const char *fname, char **l) {
+ char **i, *p;
+ FILE *f;
+ int r;
+
+ r = fopen_temporary(fname, &f, &p);
+ if (r < 0)
+ return r;
+
+ fchmod_umask(fileno(f), 0644);
+
+ errno = 0;
+ STRV_FOREACH(i, l) {
+ fputs(*i, f);
+ fputc('\n', f);
+ }
+
+ fflush(f);
+
+ if (ferror(f)) {
+ if (errno != 0)
+ r = -errno;
+ else
+ r = -EIO;
+ } else {
+ if (rename(p, fname) < 0)
+ r = -errno;
+ else
+ r = 0;
+ }
+
+ if (r < 0)
+ unlink(p);
+
+ fclose(f);
+ free(p);
+
+ return r;
+}
+
char *truncate_nl(char *s) {
assert(s);
if (r < 0)
return r;
- truncate_nl(*name);
return 0;
}
if (asprintf(&p, "/proc/%lu/cmdline", (unsigned long) pid) < 0)
return -ENOMEM;
- f = fopen(p, "r");
+ f = fopen(p, "re");
free(p);
if (!f)
return 0;
}
+int readlink_and_canonicalize(const char *p, char **r) {
+ char *t, *s;
+ int j;
+
+ assert(p);
+ assert(r);
+
+ j = readlink_and_make_absolute(p, &t);
+ if (j < 0)
+ return j;
+
+ s = canonicalize_file_name(t);
+ if (s) {
+ free(t);
+ *r = s;
+ } else
+ *r = t;
+
+ path_kill_slashes(*r);
+
+ return 0;
+}
+
int parent_of_path(const char *path, char **_r) {
const char *e, *a = NULL, *b = NULL, *p;
char *r;
}
char *path_make_absolute(const char *p, const char *prefix) {
- char *r;
-
assert(p);
/* Makes every item in the list an absolute path by prepending
if (path_is_absolute(p) || !prefix)
return strdup(p);
- if (asprintf(&r, "%s/%s", prefix, p) < 0)
- return NULL;
-
- return r;
+ return join(prefix, "/", p, NULL);
}
char *path_make_absolute_cwd(const char *p) {
return l;
}
+char **strv_path_remove_empty(char **l) {
+ char **f, **t;
+
+ if (!l)
+ return NULL;
+
+ for (f = t = l; *f; f++) {
+
+ if (dir_is_empty(*f) > 0) {
+ free(*f);
+ continue;
+ }
+
+ *(t++) = *f;
+ }
+
+ *t = NULL;
+ return l;
+}
+
int reset_all_signal_handlers(void) {
int sig;
}
char *strstrip(char *s) {
- char *e, *l = NULL;
+ char *e;
/* Drops trailing whitespace. Modifies the string in
* place. Returns pointer to first non-space character */
s += strspn(s, WHITESPACE);
- for (e = s; *e; e++)
- if (!strchr(WHITESPACE, *e))
- l = e;
+ for (e = strchr(s, 0); e > s; e --)
+ if (!strchr(WHITESPACE, e[-1]))
+ break;
- if (l)
- *(l+1) = 0;
- else
- *s = 0;
+ *e = 0;
return s;
}
int chvt(int vt) {
int fd, r = 0;
- if ((fd = open("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC)) < 0)
+ if ((fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC)) < 0)
return -errno;
if (vt < 0) {
int read_one_char(FILE *f, char *ret, bool *need_nl) {
struct termios old_termios, new_termios;
char c;
- char line[1024];
+ char line[LINE_MAX];
assert(f);
assert(ret);
}
}
-int reset_terminal(int fd) {
+int reset_terminal_fd(int fd) {
struct termios termios;
int r = 0;
long arg;
return r;
}
+int reset_terminal(const char *name) {
+ int fd, r;
+
+ fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0)
+ return fd;
+
+ r = reset_terminal_fd(fd);
+ close_nointr_nofail(fd);
+
+ return r;
+}
+
int open_terminal(const char *name, int mode) {
int fd, r;
unsigned c = 0;
pollfd.events = POLLIN;
for (;;) {
- char buf[1024];
+ char buf[LINE_MAX];
ssize_t l;
int r;
/* We pass here O_NOCTTY only so that we can check the return
* value TIOCSCTTY and have a reliable way to figure out if we
* successfully became the controlling process of the tty */
- if ((fd = open_terminal(name, O_RDWR|O_NOCTTY)) < 0)
- return -errno;
+ if ((fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC)) < 0)
+ return fd;
/* First, try to get the tty */
r = ioctl(fd, TIOCSCTTY, force);
if (notify >= 0)
close_nointr_nofail(notify);
- if ((r = reset_terminal(fd)) < 0)
+ if ((r = reset_terminal_fd(fd)) < 0)
log_warning("Failed to reset terminal: %s", strerror(-r));
return fd;
int r = 0, fd;
struct sigaction sa_old, sa_new;
- if ((fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_NDELAY)) < 0)
+ if ((fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_NDELAY|O_CLOEXEC)) < 0)
return -errno;
/* Temporarily ignore SIGHUP, so that we don't get SIGHUP'ed
if (r < 0 || s < 0 || t < 0)
return -errno;
+ fd_cloexec(STDIN_FILENO, false);
+ fd_cloexec(STDOUT_FILENO, false);
+ fd_cloexec(STDERR_FILENO, false);
+
return 0;
}
if (program_invocation_name)
strncpy(program_invocation_name, name, strlen(program_invocation_name));
+
+ if (saved_argc > 0) {
+ int i;
+
+ if (saved_argv[0])
+ strncpy(saved_argv[0], name, strlen(saved_argv[0]));
+
+ for (i = 1; i < saved_argc; i++) {
+ if (!saved_argv[i])
+ break;
+
+ memset(saved_argv[i], 0, strlen(saved_argv[i]));
+ }
+ }
}
void sigset_add_many(sigset_t *ss, ...) {
if (streq(s, "tty")) {
free(s);
- return get_ctty(r);
+ return get_ctty(0, NULL, r);
}
*r = s;
return 0;
}
-int get_ctty_devnr(dev_t *d) {
+int get_ctty_devnr(pid_t pid, dev_t *d) {
int k;
- char line[256], *p;
+ char line[LINE_MAX], *p, *fn;
unsigned long ttynr;
FILE *f;
- if (!(f = fopen("/proc/self/stat", "r")))
+ if (asprintf(&fn, "/proc/%lu/stat", (unsigned long) (pid <= 0 ? getpid() : pid)) < 0)
+ return -ENOMEM;
+
+ f = fopen(fn, "re");
+ free(fn);
+ if (!f)
return -errno;
- if (!(fgets(line, sizeof(line), f))) {
+ if (!fgets(line, sizeof(line), f)) {
k = -errno;
fclose(f);
return k;
fclose(f);
- if (!(p = strrchr(line, ')')))
+ p = strrchr(line, ')');
+ if (!p)
return -EIO;
p++;
return 0;
}
-int get_ctty(char **r) {
+int get_ctty(pid_t pid, dev_t *_devnr, char **r) {
int k;
- char fn[128], *s, *b, *p;
+ char fn[PATH_MAX], *s, *b, *p;
dev_t devnr;
assert(r);
- if ((k = get_ctty_devnr(&devnr)) < 0)
+ k = get_ctty_devnr(pid, &devnr);
+ if (k < 0)
return k;
snprintf(fn, sizeof(fn), "/dev/char/%u:%u", major(devnr), minor(devnr));
if (k != -ENOENT)
return k;
+ /* This is an ugly hack */
+ if (major(devnr) == 136) {
+ if (asprintf(&b, "pts/%lu", (unsigned long) minor(devnr)) < 0)
+ return -ENOMEM;
+
+ *r = b;
+ if (_devnr)
+ *_devnr = devnr;
+
+ return 0;
+ }
+
/* Probably something like the ptys which have no
* symlink in /dev/char. Let's return something
* vaguely useful. */
return -ENOMEM;
*r = b;
+ if (_devnr)
+ *_devnr = devnr;
+
return 0;
}
return -ENOMEM;
*r = b;
+ if (_devnr)
+ *_devnr = devnr;
+
return 0;
}
if (r != -ENOENT)
log_warning("Failed to read /etc/system-release: %s", strerror(-r));
- } else
- truncate_nl(pretty_name);
+ }
}
if (!ansi_color && pretty_name) {
if (r != -ENOENT)
log_warning("Failed to read /etc/SuSE-release: %s", strerror(-r));
- } else
- truncate_nl(pretty_name);
+ }
}
if (!ansi_color)
if (r != -ENOENT)
log_warning("Failed to read /etc/gentoo-release: %s", strerror(-r));
- } else
- truncate_nl(pretty_name);
+ }
}
if (!ansi_color)
if (r != -ENOENT)
log_warning("Failed to read /etc/altlinux-release: %s", strerror(-r));
- } else
- truncate_nl(pretty_name);
+ }
}
if (!ansi_color)
if (r != -ENOENT)
log_warning("Failed to read /etc/debian_version: %s", strerror(-r));
} else {
- truncate_nl(version);
pretty_name = strappend("Debian ", version);
free(version);
free(s);
}
}
+#elif defined(TARGET_MEEGO)
+
+ if (!pretty_name) {
+ if ((r = read_one_line_file("/etc/meego-release", &pretty_name)) < 0) {
+
+ if (r != -ENOENT)
+ log_warning("Failed to read /etc/meego-release: %s", strerror(-r));
+ }
+ }
+ if (!ansi_color)
+ const_color = "1;35"; /* Bright Magenta for MeeGo */
#endif
if (!pretty_name && !const_pretty)
static __thread int parsed_columns = 0;
const char *e;
- if (parsed_columns > 0)
+ if (_likely_(parsed_columns > 0))
return parsed_columns;
if ((e = getenv("COLUMNS")))
assert(path);
- if ((fd = open(path, O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, 0666)) < 0)
+ if ((fd = open(path, O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, 0644)) < 0)
return -errno;
close_nointr_nofail(fd);
free(p);
if (!value) {
- free(p);
free(name);
return NULL;
}
}
int wait_for_terminate(pid_t pid, siginfo_t *status) {
+ siginfo_t dummy;
+
assert(pid >= 1);
- assert(status);
+
+ if (!status)
+ status = &dummy;
for (;;) {
zero(*status);
if (status.si_code == CLD_EXITED) {
if (status.si_status != 0) {
log_warning("%s failed with error code %i.", name, status.si_status);
- return -EPROTO;
+ return status.si_status;
}
log_debug("%s succeeded.", name);
return false;
}
+int null_or_empty_path(const char *fn) {
+ struct stat st;
+
+ assert(fn);
+
+ if (stat(fn, &st) < 0)
+ return -errno;
+
+ return null_or_empty(&st);
+}
+
DIR *xopendirat(int fd, const char *name, int flags) {
int nfd;
DIR *d;
if (startswith(tty, "/dev/"))
tty += 5;
- return startswith(tty, "tty") &&
- tty[3] >= '0' && tty[3] <= '9';
+ return vtnr_from_tty(tty) >= 0;
}
-const char *default_term_for_tty(const char *tty) {
- char *active = NULL;
- const char *term;
+int vtnr_from_tty(const char *tty) {
+ int i, r;
assert(tty);
if (startswith(tty, "/dev/"))
tty += 5;
- /* Resolve where /dev/console is pointing when determining
- * TERM */
- if (streq(tty, "console"))
- if (read_one_line_file("/sys/class/tty/console/active", &active) >= 0) {
- truncate_nl(active);
+ if (!startswith(tty, "tty") )
+ return -EINVAL;
+ if (tty[3] < '0' || tty[3] > '9')
+ return -EINVAL;
+
+ r = safe_atoi(tty+3, &i);
+ if (r < 0)
+ return r;
+
+ if (i < 0 || i > 63)
+ return -EINVAL;
+
+ return i;
+}
+
+const char *default_term_for_tty(const char *tty) {
+ char *active = NULL;
+ const char *term;
+
+ assert(tty);
+
+ if (startswith(tty, "/dev/"))
+ tty += 5;
+
+ /* Resolve where /dev/console is pointing when determining
+ * TERM */
+ if (streq(tty, "console"))
+ if (read_one_line_file("/sys/class/tty/console/active", &active) >= 0) {
/* If multiple log outputs are configured the
* last one is what /dev/console points to */
if ((tty = strrchr(active, ' ')))
: "0" (eax)
);
- hypervisor = !!(ecx & ecx & 0x80000000U);
+ hypervisor = !!(ecx & 0x80000000U);
if (hypervisor) {
return 0;
}
-/* Returns a short identifier for the various VM/container implementations */
-int detect_virtualization(const char **id) {
- int r;
+int detect_container(const char **id) {
+ FILE *f;
- /* Unfortunately most of these operations require root access
+ /* Unfortunately many of these operations require root access
* in one way or another */
+
if (geteuid() != 0)
return -EPERM;
- if ((r = running_in_chroot()) > 0) {
+ if (running_in_chroot() > 0) {
+
if (id)
*id = "chroot";
- return r;
+ return 1;
}
/* /proc/vz exists in container and outside of the container,
return 1;
}
- return detect_vm(id);
+ if ((f = fopen("/proc/self/cgroup", "re"))) {
+
+ for (;;) {
+ char line[LINE_MAX], *p;
+
+ if (!fgets(line, sizeof(line), f))
+ break;
+
+ if (!(p = strchr(strstrip(line), ':')))
+ continue;
+
+ if (strncmp(p, ":ns:", 4))
+ continue;
+
+ if (!streq(p, ":ns:/")) {
+ fclose(f);
+
+ if (id)
+ *id = "pidns";
+
+ return 1;
+ }
+ }
+
+ fclose(f);
+ }
+
+ return 0;
+}
+
+/* Returns a short identifier for the various VM/container implementations */
+int detect_virtualization(const char **id) {
+ static __thread const char *cached_id = NULL;
+ const char *_id;
+ int r;
+
+ if (_likely_(cached_id)) {
+
+ if (cached_id == (const char*) -1)
+ return 0;
+
+ if (id)
+ *id = cached_id;
+
+ return 1;
+ }
+
+ if ((r = detect_container(&_id)) != 0)
+ goto finish;
+
+ r = detect_vm(&_id);
+
+finish:
+ if (r > 0) {
+ cached_id = _id;
+
+ if (id)
+ *id = _id;
+ } else if (r == 0)
+ cached_id = (const char*) -1;
+
+ return r;
+}
+
+bool dirent_is_file(struct dirent *de) {
+ assert(de);
+
+ if (ignore_file(de->d_name))
+ return false;
+
+ if (de->d_type != DT_REG &&
+ de->d_type != DT_LNK &&
+ de->d_type != DT_UNKNOWN)
+ return false;
+
+ return true;
}
void execute_directory(const char *directory, DIR *d, char *argv[]) {
pid_t pid;
int k;
- if (ignore_file(de->d_name))
- continue;
-
- if (de->d_type != DT_REG &&
- de->d_type != DT_LNK &&
- de->d_type != DT_UNKNOWN)
+ if (!dirent_is_file(de))
continue;
if (asprintf(&path, "%s/%s", directory, de->d_name) < 0) {
return false;
}
+bool plymouth_running(void) {
+ return access("/run/plymouth/pid", F_OK) >= 0;
+}
+
+void parse_syslog_priority(char **p, int *priority) {
+ int a = 0, b = 0, c = 0;
+ int k;
+
+ assert(p);
+ assert(*p);
+ assert(priority);
+
+ if ((*p)[0] != '<')
+ return;
+
+ if (!strchr(*p, '>'))
+ return;
+
+ if ((*p)[2] == '>') {
+ c = undecchar((*p)[1]);
+ k = 3;
+ } else if ((*p)[3] == '>') {
+ b = undecchar((*p)[1]);
+ c = undecchar((*p)[2]);
+ k = 4;
+ } else if ((*p)[4] == '>') {
+ a = undecchar((*p)[1]);
+ b = undecchar((*p)[2]);
+ c = undecchar((*p)[3]);
+ k = 5;
+ } else
+ return;
+
+ if (a < 0 || b < 0 || c < 0)
+ return;
+
+ *priority = a*100+b*10+c;
+ *p += k;
+}
+
+int have_effective_cap(int value) {
+ cap_t cap;
+ cap_flag_value_t fv;
+ int r;
+
+ if (!(cap = cap_get_proc()))
+ return -errno;
+
+ if (cap_get_flag(cap, value, CAP_EFFECTIVE, &fv) < 0)
+ r = -errno;
+ else
+ r = fv == CAP_SET;
+
+ cap_free(cap);
+ return r;
+}
+
+char* strshorten(char *s, size_t l) {
+ assert(s);
+
+ if (l < strlen(s))
+ s[l] = 0;
+
+ return s;
+}
+
+static bool hostname_valid_char(char c) {
+ return
+ (c >= 'a' && c <= 'z') ||
+ (c >= 'A' && c <= 'Z') ||
+ (c >= '0' && c <= '9') ||
+ c == '-' ||
+ c == '_' ||
+ c == '.';
+}
+
+bool hostname_is_valid(const char *s) {
+ const char *p;
+
+ if (isempty(s))
+ return false;
+
+ for (p = s; *p; p++)
+ if (!hostname_valid_char(*p))
+ return false;
+
+ if (p-s > HOST_NAME_MAX)
+ return false;
+
+ return true;
+}
+
+char* hostname_cleanup(char *s) {
+ char *p, *d;
+
+ for (p = s, d = s; *p; p++)
+ if ((*p >= 'a' && *p <= 'z') ||
+ (*p >= 'A' && *p <= 'Z') ||
+ (*p >= '0' && *p <= '9') ||
+ *p == '-' ||
+ *p == '_' ||
+ *p == '.')
+ *(d++) = *p;
+
+ *d = 0;
+
+ strshorten(s, HOST_NAME_MAX);
+ return s;
+}
+
+int pipe_eof(int fd) {
+ struct pollfd pollfd;
+ int r;
+
+ zero(pollfd);
+ pollfd.fd = fd;
+ pollfd.events = POLLIN|POLLHUP;
+
+ r = poll(&pollfd, 1, 0);
+ if (r < 0)
+ return -errno;
+
+ if (r == 0)
+ return 0;
+
+ return pollfd.revents & POLLHUP;
+}
+
+int fopen_temporary(const char *path, FILE **_f, char **_temp_path) {
+ FILE *f;
+ char *t;
+ const char *fn;
+ size_t k;
+ int fd;
+
+ assert(path);
+ assert(_f);
+ assert(_temp_path);
+
+ t = new(char, strlen(path) + 1 + 6 + 1);
+ if (!t)
+ return -ENOMEM;
+
+ fn = file_name_from_path(path);
+ k = fn-path;
+ memcpy(t, path, k);
+ t[k] = '.';
+ stpcpy(stpcpy(t+k+1, fn), "XXXXXX");
+
+ fd = mkostemp(t, O_WRONLY|O_CLOEXEC);
+ if (fd < 0) {
+ free(t);
+ return -errno;
+ }
+
+ f = fdopen(fd, "we");
+ if (!f) {
+ unlink(t);
+ free(t);
+ return -errno;
+ }
+
+ *_f = f;
+ *_temp_path = t;
+
+ return 0;
+}
+
+int terminal_vhangup_fd(int fd) {
+ assert(fd >= 0);
+
+ if (ioctl(fd, TIOCVHANGUP) < 0)
+ return -errno;
+
+ return 0;
+}
+
+int terminal_vhangup(const char *name) {
+ int fd, r;
+
+ fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0)
+ return fd;
+
+ r = terminal_vhangup_fd(fd);
+ close_nointr_nofail(fd);
+
+ return r;
+}
+
+int vt_disallocate(const char *name) {
+ int fd, r;
+ unsigned u;
+
+ /* Deallocate the VT if possible. If not possible
+ * (i.e. because it is the active one), at least clear it
+ * entirely (including the scrollback buffer) */
+
+ if (!startswith(name, "/dev/"))
+ return -EINVAL;
+
+ if (!tty_is_vc(name)) {
+ /* So this is not a VT. I guess we cannot deallocate
+ * it then. But let's at least clear the screen */
+
+ fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0)
+ return fd;
+
+ loop_write(fd,
+ "\033[r" /* clear scrolling region */
+ "\033[H" /* move home */
+ "\033[2J", /* clear screen */
+ 10, false);
+ close_nointr_nofail(fd);
+
+ return 0;
+ }
+
+ if (!startswith(name, "/dev/tty"))
+ return -EINVAL;
+
+ r = safe_atou(name+8, &u);
+ if (r < 0)
+ return r;
+
+ if (u <= 0)
+ return -EINVAL;
+
+ /* Try to deallocate */
+ fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0)
+ return fd;
+
+ r = ioctl(fd, VT_DISALLOCATE, u);
+ close_nointr_nofail(fd);
+
+ if (r >= 0)
+ return 0;
+
+ if (errno != EBUSY)
+ return -errno;
+
+ /* Couldn't deallocate, so let's clear it fully with
+ * scrollback */
+ fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);
+ if (fd < 0)
+ return fd;
+
+ loop_write(fd,
+ "\033[r" /* clear scrolling region */
+ "\033[H" /* move home */
+ "\033[3J", /* clear screen including scrollback, requires Linux 2.6.40 */
+ 10, false);
+ close_nointr_nofail(fd);
+
+ return 0;
+}
+
+
+static int file_is_conf(const struct dirent *d, const char *suffix) {
+ assert(d);
+
+ if (ignore_file(d->d_name))
+ return 0;
+
+ if (d->d_type != DT_REG &&
+ d->d_type != DT_LNK &&
+ d->d_type != DT_UNKNOWN)
+ return 0;
+
+ return endswith(d->d_name, suffix);
+}
+
+static int files_add(Hashmap *h, const char *path, const char *suffix) {
+ DIR *dir;
+ struct dirent buffer, *de;
+ int r = 0;
+
+ dir = opendir(path);
+ if (!dir) {
+ if (errno == ENOENT)
+ return 0;
+ return -errno;
+ }
+
+ for (;;) {
+ int k;
+ char *p, *f;
+
+ k = readdir_r(dir, &buffer, &de);
+ if (k != 0) {
+ r = -k;
+ goto finish;
+ }
+
+ if (!de)
+ break;
+
+ if (!file_is_conf(de, suffix))
+ continue;
+
+ if (asprintf(&p, "%s/%s", path, de->d_name) < 0) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ f = canonicalize_file_name(p);
+ if (!f) {
+ log_error("Failed to canonicalize file name '%s': %m", p);
+ free(p);
+ continue;
+ }
+ free(p);
+
+ log_debug("found: %s\n", f);
+ if (hashmap_put(h, file_name_from_path(f), f) <= 0)
+ free(f);
+ }
+
+finish:
+ closedir(dir);
+ return r;
+}
+
+static int base_cmp(const void *a, const void *b) {
+ const char *s1, *s2;
+
+ s1 = *(char * const *)a;
+ s2 = *(char * const *)b;
+ return strcmp(file_name_from_path(s1), file_name_from_path(s2));
+}
+
+int conf_files_list(char ***strv, const char *suffix, const char *dir, ...) {
+ Hashmap *fh = NULL;
+ char **dirs = NULL;
+ char **files = NULL;
+ char **p;
+ va_list ap;
+ int r = 0;
+
+ va_start(ap, dir);
+ dirs = strv_new_ap(dir, ap);
+ va_end(ap);
+ if (!dirs) {
+ r = -ENOMEM;
+ goto finish;
+ }
+ if (!strv_path_canonicalize(dirs)) {
+ r = -ENOMEM;
+ goto finish;
+ }
+ if (!strv_uniq(dirs)) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ fh = hashmap_new(string_hash_func, string_compare_func);
+ if (!fh) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ STRV_FOREACH(p, dirs) {
+ if (files_add(fh, *p, suffix) < 0) {
+ log_error("Failed to search for files.");
+ r = -EINVAL;
+ goto finish;
+ }
+ }
+
+ files = hashmap_get_strv(fh);
+ if (files == NULL) {
+ log_error("Failed to compose list of files.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ qsort(files, hashmap_size(fh), sizeof(char *), base_cmp);
+
+finish:
+ strv_free(dirs);
+ hashmap_free(fh);
+ *strv = files;
+ return r;
+}
+
+int hwclock_is_localtime(void) {
+ FILE *f;
+ bool local = false;
+
+ /*
+ * The third line of adjtime is "UTC" or "LOCAL" or nothing.
+ * # /etc/adjtime
+ * 0.0 0 0
+ * 0
+ * UTC
+ */
+ f = fopen("/etc/adjtime", "re");
+ if (f) {
+ char line[LINE_MAX];
+ bool b;
+
+ b = fgets(line, sizeof(line), f) &&
+ fgets(line, sizeof(line), f) &&
+ fgets(line, sizeof(line), f);
+
+ fclose(f);
+
+ if (!b)
+ return -EIO;
+
+
+ truncate_nl(line);
+ local = streq(line, "LOCAL");
+
+ } else if (errno != -ENOENT)
+ return -errno;
+
+ return local;
+}
+
+int hwclock_apply_localtime_delta(int *min) {
+ const struct timeval *tv_null = NULL;
+ struct timespec ts;
+ struct tm *tm;
+ int minuteswest;
+ struct timezone tz;
+
+ assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0);
+ assert_se(tm = localtime(&ts.tv_sec));
+ minuteswest = tm->tm_gmtoff / 60;
+
+ tz.tz_minuteswest = -minuteswest;
+ tz.tz_dsttime = 0; /* DST_NONE*/
+
+ /*
+ * If the hardware clock does not run in UTC, but in local time:
+ * The very first time we set the kernel's timezone, it will warp
+ * the clock so that it runs in UTC instead of local time.
+ */
+ if (settimeofday(tv_null, &tz) < 0)
+ return -errno;
+ if (min)
+ *min = minuteswest;
+ return 0;
+}
+
+int hwclock_reset_localtime_delta(void) {
+ const struct timeval *tv_null = NULL;
+ struct timezone tz;
+
+ tz.tz_minuteswest = 0;
+ tz.tz_dsttime = 0; /* DST_NONE*/
+
+ if (settimeofday(tv_null, &tz) < 0)
+ return -errno;
+
+ return 0;
+}
+
+int hwclock_get_time(struct tm *tm) {
+ int fd;
+ int err = 0;
+
+ assert(tm);
+
+ fd = open("/dev/rtc0", O_RDONLY|O_CLOEXEC);
+ if (fd < 0)
+ return -errno;
+
+ /* This leaves the timezone fields of struct tm
+ * uninitialized! */
+ if (ioctl(fd, RTC_RD_TIME, tm) < 0)
+ err = -errno;
+
+ /* We don't now daylight saving, so we reset this in order not
+ * to confused mktime(). */
+ tm->tm_isdst = -1;
+
+ close_nointr_nofail(fd);
+
+ return err;
+}
+
+int hwclock_set_time(const struct tm *tm) {
+ int fd;
+ int err = 0;
+
+ assert(tm);
+
+ fd = open("/dev/rtc0", O_RDONLY|O_CLOEXEC);
+ if (fd < 0)
+ return -errno;
+
+ if (ioctl(fd, RTC_SET_TIME, tm) < 0)
+ err = -errno;
+
+ close_nointr_nofail(fd);
+
+ return err;
+}
+
+int copy_file(const char *from, const char *to) {
+ int r, fdf, fdt;
+
+ assert(from);
+ assert(to);
+
+ fdf = open(from, O_RDONLY|O_CLOEXEC|O_NOCTTY);
+ if (fdf < 0)
+ return -errno;
+
+ fdt = open(to, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOCTTY, 0644);
+ if (fdt < 0) {
+ close_nointr_nofail(fdf);
+ return -errno;
+ }
+
+ for (;;) {
+ char buf[PIPE_BUF];
+ ssize_t n, k;
+
+ n = read(fdf, buf, sizeof(buf));
+ if (n < 0) {
+ r = -errno;
+
+ close_nointr_nofail(fdf);
+ close_nointr(fdt);
+ unlink(to);
+
+ return r;
+ }
+
+ if (n == 0)
+ break;
+
+ errno = 0;
+ k = loop_write(fdt, buf, n, false);
+ if (n != k) {
+ r = k < 0 ? k : (errno ? -errno : -EIO);
+
+ close_nointr_nofail(fdf);
+ close_nointr(fdt);
+
+ unlink(to);
+ return r;
+ }
+ }
+
+ close_nointr_nofail(fdf);
+ r = close_nointr(fdt);
+
+ if (r < 0) {
+ unlink(to);
+ return r;
+ }
+
+ return 0;
+}
+
+int symlink_or_copy(const char *from, const char *to) {
+ char *pf = NULL, *pt = NULL;
+ struct stat a, b;
+ int r;
+
+ assert(from);
+ assert(to);
+
+ if (parent_of_path(from, &pf) < 0 ||
+ parent_of_path(to, &pt) < 0) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (stat(pf, &a) < 0 ||
+ stat(pt, &b) < 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ if (a.st_dev != b.st_dev) {
+ free(pf);
+ free(pt);
+
+ return copy_file(from, to);
+ }
+
+ if (symlink(from, to) < 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ r = 0;
+
+finish:
+ free(pf);
+ free(pt);
+
+ return r;
+}
+
+int symlink_or_copy_atomic(const char *from, const char *to) {
+ char *t, *x;
+ const char *fn;
+ size_t k;
+ unsigned long long ull;
+ unsigned i;
+ int r;
+
+ assert(from);
+ assert(to);
+
+ t = new(char, strlen(to) + 1 + 16 + 1);
+ if (!t)
+ return -ENOMEM;
+
+ fn = file_name_from_path(to);
+ k = fn-to;
+ memcpy(t, to, k);
+ t[k] = '.';
+ x = stpcpy(t+k+1, fn);
+
+ ull = random_ull();
+ for (i = 0; i < 16; i++) {
+ *(x++) = hexchar(ull & 0xF);
+ ull >>= 4;
+ }
+
+ *x = 0;
+
+ r = symlink_or_copy(from, t);
+ if (r < 0) {
+ unlink(t);
+ free(t);
+ return r;
+ }
+
+ if (rename(t, to) < 0) {
+ r = -errno;
+ unlink(t);
+ free(t);
+ return r;
+ }
+
+ free(t);
+ return r;
+}
+
+int audit_session_from_pid(pid_t pid, uint32_t *id) {
+ char *p, *s;
+ uint32_t u;
+ int r;
+
+ assert(pid >= 1);
+ assert(id);
+
+ if (have_effective_cap(CAP_AUDIT_CONTROL) <= 0)
+ return -ENOENT;
+
+ if (asprintf(&p, "/proc/%lu/sessionid", (unsigned long) pid) < 0)
+ return -ENOMEM;
+
+ r = read_one_line_file(p, &s);
+ free(p);
+ if (r < 0)
+ return r;
+
+ r = safe_atou32(s, &u);
+ free(s);
+
+ if (r < 0)
+ return r;
+
+ if (u == (uint32_t) -1 || u <= 0)
+ return -ENOENT;
+
+ *id = u;
+ return 0;
+}
+
+bool display_is_local(const char *display) {
+ assert(display);
+
+ return
+ display[0] == ':' &&
+ display[1] >= '0' &&
+ display[1] <= '9';
+}
+
+int socket_from_display(const char *display, char **path) {
+ size_t k;
+ char *f, *c;
+
+ assert(display);
+ assert(path);
+
+ if (!display_is_local(display))
+ return -EINVAL;
+
+ k = strspn(display+1, "0123456789");
+
+ f = new(char, sizeof("/tmp/.X11-unix/X") + k);
+ if (!f)
+ return -ENOMEM;
+
+ c = stpcpy(f, "/tmp/.X11-unix/X");
+ memcpy(c, display+1, k);
+ c[k] = 0;
+
+ *path = f;
+
+ return 0;
+}
+
+int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home) {
+ struct passwd *p;
+ uid_t u;
+
+ assert(username);
+ assert(*username);
+
+ /* We enforce some special rules for uid=0: in order to avoid
+ * NSS lookups for root we hardcode its data. */
+
+ if (streq(*username, "root") || streq(*username, "0")) {
+ *username = "root";
+
+ if (uid)
+ *uid = 0;
+
+ if (gid)
+ *gid = 0;
+
+ if (home)
+ *home = "/root";
+ return 0;
+ }
+
+ if (parse_uid(*username, &u) >= 0) {
+ errno = 0;
+ p = getpwuid(u);
+
+ /* If there are multiple users with the same id, make
+ * sure to leave $USER to the configured value instead
+ * of the first occurrence in the database. However if
+ * the uid was configured by a numeric uid, then let's
+ * pick the real username from /etc/passwd. */
+ if (p)
+ *username = p->pw_name;
+ } else {
+ errno = 0;
+ p = getpwnam(*username);
+ }
+
+ if (!p)
+ return errno != 0 ? -errno : -ESRCH;
+
+ if (uid)
+ *uid = p->pw_uid;
+
+ if (gid)
+ *gid = p->pw_gid;
+
+ if (home)
+ *home = p->pw_dir;
+
+ return 0;
+}
+
+int get_group_creds(const char **groupname, gid_t *gid) {
+ struct group *g;
+ gid_t id;
+
+ assert(groupname);
+
+ /* We enforce some special rules for gid=0: in order to avoid
+ * NSS lookups for root we hardcode its data. */
+
+ if (streq(*groupname, "root") || streq(*groupname, "0")) {
+ *groupname = "root";
+
+ if (gid)
+ *gid = 0;
+
+ return 0;
+ }
+
+ if (parse_gid(*groupname, &id) >= 0) {
+ errno = 0;
+ g = getgrgid(id);
+
+ if (g)
+ *groupname = g->gr_name;
+ } else {
+ errno = 0;
+ g = getgrnam(*groupname);
+ }
+
+ if (!g)
+ return errno != 0 ? -errno : -ESRCH;
+
+ if (gid)
+ *gid = g->gr_gid;
+
+ return 0;
+}
+
+int glob_exists(const char *path) {
+ glob_t g;
+ int r, k;
+
+ assert(path);
+
+ zero(g);
+ errno = 0;
+ k = glob(path, GLOB_NOSORT|GLOB_BRACE, NULL, &g);
+
+ if (k == GLOB_NOMATCH)
+ r = 0;
+ else if (k == GLOB_NOSPACE)
+ r = -ENOMEM;
+ else if (k == 0)
+ r = !strv_isempty(g.gl_pathv);
+ else
+ r = errno ? -errno : -EIO;
+
+ globfree(&g);
+
+ return r;
+}
+
+int dirent_ensure_type(DIR *d, struct dirent *de) {
+ struct stat st;
+
+ assert(d);
+ assert(de);
+
+ if (de->d_type != DT_UNKNOWN)
+ return 0;
+
+ if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0)
+ return -errno;
+
+ de->d_type =
+ S_ISREG(st.st_mode) ? DT_REG :
+ S_ISDIR(st.st_mode) ? DT_DIR :
+ S_ISLNK(st.st_mode) ? DT_LNK :
+ S_ISFIFO(st.st_mode) ? DT_FIFO :
+ S_ISSOCK(st.st_mode) ? DT_SOCK :
+ S_ISCHR(st.st_mode) ? DT_CHR :
+ S_ISBLK(st.st_mode) ? DT_BLK :
+ DT_UNKNOWN;
+
+ return 0;
+}
+
+int in_search_path(const char *path, char **search) {
+ char **i, *parent;
+ int r;
+
+ r = parent_of_path(path, &parent);
+ if (r < 0)
+ return r;
+
+ r = 0;
+
+ STRV_FOREACH(i, search) {
+ if (path_equal(parent, *i)) {
+ r = 1;
+ break;
+ }
+ }
+
+ free(parent);
+
+ return r;
+}
+
+int get_files_in_directory(const char *path, char ***list) {
+ DIR *d;
+ int r = 0;
+ unsigned n = 0;
+ char **l = NULL;
+
+ assert(path);
+
+ /* Returns all files in a directory in *list, and the number
+ * of files as return value. If list is NULL returns only the
+ * number */
+
+ d = opendir(path);
+ for (;;) {
+ struct dirent buffer, *de;
+ int k;
+
+ k = readdir_r(d, &buffer, &de);
+ if (k != 0) {
+ r = -k;
+ goto finish;
+ }
+
+ if (!de)
+ break;
+
+ dirent_ensure_type(d, de);
+
+ if (!dirent_is_file(de))
+ continue;
+
+ if (list) {
+ if ((unsigned) r >= n) {
+ char **t;
+
+ n = MAX(16, 2*r);
+ t = realloc(l, sizeof(char*) * n);
+ if (!t) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ l = t;
+ }
+
+ assert((unsigned) r < n);
+
+ l[r] = strdup(de->d_name);
+ if (!l[r]) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ l[++r] = NULL;
+ } else
+ r++;
+ }
+
+finish:
+ if (d)
+ closedir(d);
+
+ if (r >= 0) {
+ if (list)
+ *list = l;
+ } else
+ strv_free(l);
+
+ return r;
+}
+
+char *join(const char *x, ...) {
+ va_list ap;
+ size_t l;
+ char *r, *p;
+
+ va_start(ap, x);
+
+ if (x) {
+ l = strlen(x);
+
+ for (;;) {
+ const char *t;
+
+ t = va_arg(ap, const char *);
+ if (!t)
+ break;
+
+ l += strlen(t);
+ }
+ } else
+ l = 0;
+
+ va_end(ap);
+
+ r = new(char, l+1);
+ if (!r)
+ return NULL;
+
+ if (x) {
+ p = stpcpy(r, x);
+
+ va_start(ap, x);
+
+ for (;;) {
+ const char *t;
+
+ t = va_arg(ap, const char *);
+ if (!t)
+ break;
+
+ p = stpcpy(p, t);
+ }
+ } else
+ r[0] = 0;
+
+ return r;
+}
+
+bool is_main_thread(void) {
+ static __thread int cached = 0;
+
+ if (_unlikely_(cached == 0))
+ cached = getpid() == gettid() ? 1 : -1;
+
+ return cached > 0;
+}
+
static const char *const ioprio_class_table[] = {
[IOPRIO_CLASS_NONE] = "none",
[IOPRIO_CLASS_RT] = "realtime",
DEFINE_STRING_TABLE_LOOKUP(sigchld_code, int);
-static const char *const log_facility_table[LOG_NFACILITIES] = {
+static const char *const log_facility_unshifted_table[LOG_NFACILITIES] = {
[LOG_FAC(LOG_KERN)] = "kern",
[LOG_FAC(LOG_USER)] = "user",
[LOG_FAC(LOG_MAIL)] = "mail",
[LOG_FAC(LOG_LOCAL7)] = "local7"
};
-DEFINE_STRING_TABLE_LOOKUP(log_facility, int);
+DEFINE_STRING_TABLE_LOOKUP(log_facility_unshifted, int);
static const char *const log_level_table[] = {
[LOG_EMERG] = "emerg",
~ianmdlvl / elogind.git / blobdiff