#include <linux/kd.h>
#include <dlfcn.h>
#include <sys/wait.h>
+#include <sys/capability.h>
#include "macro.h"
#include "util.h"
#include "strv.h"
#include "label.h"
#include "exit-status.h"
+#include "hashmap.h"
+
+size_t page_size(void) {
+ static __thread size_t pgsz = 0;
+ long r;
+
+ if (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) {
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")))
return -errno;
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, "r")))
+ 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 (!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;
goto finish;
}
+ truncate_nl(c);
+
*line = c;
r = 0;
return r;
}
+int load_env_file(
+ const char *fname,
+ char ***rl) {
+
+ FILE *f;
+ char **m = 0;
+ int r;
+
+ assert(fname);
+ assert(rl);
+
+ if (!(f = fopen(fname, "re")))
+ return -errno;
+
+ while (!feof(f)) {
+ char l[LINE_MAX], *p, *u;
+ char **t;
+
+ if (!fgets(l, sizeof(l), f)) {
+ if (feof(f))
+ break;
+
+ r = -errno;
+ goto finish;
+ }
+
+ p = strstrip(l);
+
+ if (!*p)
+ continue;
+
+ if (strchr(COMMENTS, *p))
+ continue;
+
+ if (!(u = normalize_env_assignment(p))) {
+ log_error("Out of memory");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ t = strv_append(m, u);
+ free(u);
+
+ if (!t) {
+ log_error("Out of memory");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ strv_free(m);
+ m = t;
+ }
+
+ r = 0;
+
+ *rl = m;
+ m = NULL;
+
+finish:
+ if (f)
+ fclose(f);
+
+ strv_free(m);
+
+ return r;
+}
+
+int write_env_file(const char *fname, char **l) {
+
+ char **i;
+ FILE *f;
+ int r;
+
+ f = fopen(fname, "we");
+ if (!f)
+ return -errno;
+
+ STRV_FOREACH(i, l) {
+ fputs(*i, f);
+ fputc('\n', f);
+ }
+
+ fflush(f);
+
+ r = ferror(f) ? -errno : 0;
+ fclose(f);
+
+ return r;
+}
+
char *truncate_nl(char *s) {
assert(s);
if (r < 0)
return r;
- truncate_nl(*name);
return 0;
}
if (ignore_file(de->d_name))
continue;
- if ((r = safe_atoi(de->d_name, &fd)) < 0)
- goto finish;
+ if (safe_atoi(de->d_name, &fd) < 0)
+ /* Let's better ignore this, just in case */
+ continue;
if (fd < 3)
continue;
continue;
}
- if ((r = close_nointr(fd)) < 0) {
+ if (close_nointr(fd) < 0) {
/* Valgrind has its own FD and doesn't want to have it closed */
- if (errno != EBADF)
- goto finish;
+ if (errno != EBADF && r == 0)
+ r = -errno;
}
}
- r = 0;
-
-finish:
closedir(d);
return r;
}
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 open_terminal(const char *name, int mode) {
int fd, r;
+ unsigned c = 0;
+
+ /*
+ * If a TTY is in the process of being closed opening it might
+ * cause EIO. This is horribly awful, but unlikely to be
+ * changed in the kernel. Hence we work around this problem by
+ * retrying a couple of times.
+ *
+ * https://bugs.launchpad.net/ubuntu/+source/linux/+bug/554172/comments/245
+ */
+
+ for (;;) {
+ if ((fd = open(name, mode)) >= 0)
+ break;
- if ((fd = open(name, mode)) < 0)
+ if (errno != EIO)
+ return -errno;
+
+ if (c >= 20)
+ return -errno;
+
+ usleep(50 * USEC_PER_MSEC);
+ c++;
+ }
+
+ if (fd < 0)
return -errno;
if ((r = isatty(fd)) < 0) {
pollfd.events = POLLIN;
for (;;) {
- char buf[1024];
+ char buf[LINE_MAX];
ssize_t l;
int r;
return name;
}
-int getttyname_malloc(char **r) {
- char path[PATH_MAX], *p, *c;
+int getttyname_malloc(int fd, char **r) {
+ char path[PATH_MAX], *c;
int k;
assert(r);
- if ((k = ttyname_r(STDIN_FILENO, path, sizeof(path))) != 0)
+ if ((k = ttyname_r(fd, path, sizeof(path))) != 0)
return -k;
char_array_0(path);
- p = path;
- if (startswith(path, "/dev/"))
- p += 5;
-
- if (!(c = strdup(p)))
+ if (!(c = strdup(startswith(path, "/dev/") ? path + 5 : path)))
return -ENOMEM;
*r = c;
return 0;
}
+int getttyname_harder(int fd, char **r) {
+ int k;
+ char *s;
+
+ if ((k = getttyname_malloc(fd, &s)) < 0)
+ return k;
+
+ if (streq(s, "tty")) {
+ free(s);
+ return get_ctty(r, NULL);
+ }
+
+ *r = s;
+ return 0;
+}
+
+int get_ctty_devnr(dev_t *d) {
+ int k;
+ char line[LINE_MAX], *p;
+ unsigned long ttynr;
+ FILE *f;
+
+ if (!(f = fopen("/proc/self/stat", "r")))
+ return -errno;
+
+ if (!(fgets(line, sizeof(line), f))) {
+ k = -errno;
+ fclose(f);
+ return k;
+ }
+
+ fclose(f);
+
+ if (!(p = strrchr(line, ')')))
+ return -EIO;
+
+ p++;
+
+ if (sscanf(p, " "
+ "%*c " /* state */
+ "%*d " /* ppid */
+ "%*d " /* pgrp */
+ "%*d " /* session */
+ "%lu ", /* ttynr */
+ &ttynr) != 1)
+ return -EIO;
+
+ *d = (dev_t) ttynr;
+ return 0;
+}
+
+int get_ctty(char **r, dev_t *_devnr) {
+ int k;
+ char fn[PATH_MAX], *s, *b, *p;
+ dev_t devnr;
+
+ assert(r);
+
+ if ((k = get_ctty_devnr(&devnr)) < 0)
+ return k;
+
+ snprintf(fn, sizeof(fn), "/dev/char/%u:%u", major(devnr), minor(devnr));
+ char_array_0(fn);
+
+ if ((k = readlink_malloc(fn, &s)) < 0) {
+
+ 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. */
+
+ if (!(b = strdup(fn + 5)))
+ return -ENOMEM;
+
+ *r = b;
+ if (_devnr)
+ *_devnr = devnr;
+
+ return 0;
+ }
+
+ if (startswith(s, "/dev/"))
+ p = s + 5;
+ else if (startswith(s, "../"))
+ p = s + 3;
+ else
+ p = s;
+
+ b = strdup(p);
+ free(s);
+
+ if (!b)
+ return -ENOMEM;
+
+ *r = b;
+ if (_devnr)
+ *_devnr = devnr;
+
+ return 0;
+}
+
static int rm_rf_children(int fd, bool only_dirs) {
DIR *d;
int ret = 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);
if (!ansi_color)
const_color = "0;33"; /* Orange/Brown for Ubuntu */
+#elif defined(TARGET_MANDRIVA)
+
+ if (!pretty_name) {
+ char *s, *p;
+
+ if ((r = read_one_line_file("/etc/mandriva-release", &s) < 0)) {
+ if (r != -ENOENT)
+ log_warning("Failed to read /etc/mandriva-release: %s", strerror(-r));
+ } else {
+ p = strstr(s, " release ");
+ if (p) {
+ *p = '\0';
+ p += 9;
+ p[strcspn(p, " ")] = '\0';
+
+ /* This corresponds to standard rc.sysinit */
+ if (asprintf(&pretty_name, "%s\x1B[0;39m %s", s, p) > 0)
+ const_color = "1;36";
+ else
+ log_warning("Failed to allocate Mandriva version string.");
+ } else
+ log_warning("Failed to parse /etc/mandriva-release");
+ free(s);
+ }
+ }
+
#endif
if (!pretty_name && !const_pretty)
if (!ansi_color && !const_color)
const_color = "1";
- status_printf("Welcome to \x1B[%sm%s\x1B[0m!\n",
+ status_printf("\nWelcome to \x1B[%sm%s\x1B[0m!\n\n",
const_color ? const_color : ansi_color,
const_pretty ? const_pretty : pretty_name);
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;
}
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);
}
void freeze(void) {
+
+ /* Make sure nobody waits for us on a socket anymore */
+ close_all_fds(NULL, 0);
+
sync();
for (;;)
* TERM */
if (streq(tty, "console"))
if (read_one_line_file("/sys/class/tty/console/active", &active) >= 0) {
- truncate_nl(active);
-
/* If multiple log outputs are configured the
* last one is what /dev/console points to */
if ((tty = strrchr(active, ' ')))
return term;
}
-bool running_in_vm(void) {
+/* Returns a short identifier for the various VM implementations */
+int detect_vm(const char **id) {
#if defined(__i386__) || defined(__x86_64__)
/* Both CPUID and DMI are x86 specific interfaces... */
- const char *const dmi_vendors[] = {
+ static const char *const dmi_vendors[] = {
"/sys/class/dmi/id/sys_vendor",
"/sys/class/dmi/id/board_vendor",
"/sys/class/dmi/id/bios_vendor"
};
- uint32_t eax = 0x40000000;
+ static const char dmi_vendor_table[] =
+ "QEMU\0" "qemu\0"
+ /* http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1009458 */
+ "VMware\0" "vmware\0"
+ "VMW\0" "vmware\0"
+ "Microsoft Corporation\0" "microsoft\0"
+ "innotek GmbH\0" "oracle\0"
+ "Xen\0" "xen\0"
+ "Bochs\0" "bochs\0";
+
+ static const char cpuid_vendor_table[] =
+ "XenVMMXenVMM\0" "xen\0"
+ "KVMKVMKVM\0" "kvm\0"
+ /* http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1009458 */
+ "VMwareVMware\0" "vmware\0"
+ /* http://msdn.microsoft.com/en-us/library/ff542428.aspx */
+ "Microsoft Hv\0" "microsoft\0";
+
+ uint32_t eax, ecx;
union {
uint32_t sig32[3];
char text[13];
} sig;
-
unsigned i;
-
- for (i = 0; i < ELEMENTSOF(dmi_vendors); i++) {
- char *s;
- bool b;
-
- if (read_one_line_file(dmi_vendors[i], &s) < 0)
- continue;
-
- b = startswith(s, "QEMU") ||
- /* http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1009458 */
- startswith(s, "VMware") ||
- startswith(s, "VMW") ||
- startswith(s, "Microsoft Corporation") ||
- startswith(s, "innotek GmbH") ||
- startswith(s, "Xen");
-
- free(s);
-
- if (b)
- return true;
- }
+ const char *j, *k;
+ bool hypervisor;
/* http://lwn.net/Articles/301888/ */
zero(sig);
-
#if defined (__i386__)
#define REG_a "eax"
#define REG_b "ebx"
#define REG_b "rbx"
#endif
+ /* First detect whether there is a hypervisor */
+ eax = 1;
__asm__ __volatile__ (
/* ebx/rbx is being used for PIC! */
" push %%"REG_b" \n\t"
" cpuid \n\t"
- " mov %%ebx, %1 \n\t"
" pop %%"REG_b" \n\t"
- : "=a" (eax), "=r" (sig.sig32[0]), "=c" (sig.sig32[1]), "=d" (sig.sig32[2])
+ : "=a" (eax), "=c" (ecx)
: "0" (eax)
);
- if (streq(sig.text, "XenVMMXenVMM") ||
- streq(sig.text, "KVMKVMKVM") ||
- /* http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1009458 */
- streq(sig.text, "VMwareVMware") ||
- /* http://msdn.microsoft.com/en-us/library/bb969719.aspx */
- streq(sig.text, "Microsoft Hv"))
- return true;
+ hypervisor = !!(ecx & ecx & 0x80000000U);
+
+ if (hypervisor) {
+
+ /* There is a hypervisor, see what it is */
+ eax = 0x40000000U;
+ __asm__ __volatile__ (
+ /* ebx/rbx is being used for PIC! */
+ " push %%"REG_b" \n\t"
+ " cpuid \n\t"
+ " mov %%ebx, %1 \n\t"
+ " pop %%"REG_b" \n\t"
+
+ : "=a" (eax), "=r" (sig.sig32[0]), "=c" (sig.sig32[1]), "=d" (sig.sig32[2])
+ : "0" (eax)
+ );
+
+ NULSTR_FOREACH_PAIR(j, k, cpuid_vendor_table)
+ if (streq(sig.text, j)) {
+
+ if (id)
+ *id = k;
+
+ return 1;
+ }
+ }
+
+ for (i = 0; i < ELEMENTSOF(dmi_vendors); i++) {
+ char *s;
+ int r;
+ const char *found = NULL;
+
+ if ((r = read_one_line_file(dmi_vendors[i], &s)) < 0) {
+ if (r != -ENOENT)
+ return r;
+
+ continue;
+ }
+
+ NULSTR_FOREACH_PAIR(j, k, dmi_vendor_table)
+ if (startswith(s, j))
+ found = k;
+ free(s);
+
+ if (found) {
+ if (id)
+ *id = found;
+
+ return 1;
+ }
+ }
+
+ if (hypervisor) {
+ if (id)
+ *id = "other";
+
+ return 1;
+ }
+
#endif
+ return 0;
+}
+
+int detect_container(const char **id) {
+ FILE *f;
+
+ /* Unfortunately many of these operations require root access
+ * in one way or another */
+
+ if (geteuid() != 0)
+ return -EPERM;
+
+ if (running_in_chroot() > 0) {
+
+ if (id)
+ *id = "chroot";
+
+ return 1;
+ }
+
+ /* /proc/vz exists in container and outside of the container,
+ * /proc/bc only outside of the container. */
+ if (access("/proc/vz", F_OK) >= 0 &&
+ access("/proc/bc", F_OK) < 0) {
+
+ if (id)
+ *id = "openvz";
+
+ return 1;
+ }
+
+ if ((f = fopen("/proc/self/cgroup", "r"))) {
+
+ 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 (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;
+}
+
+void execute_directory(const char *directory, DIR *d, char *argv[]) {
+ DIR *_d = NULL;
+ struct dirent *de;
+ Hashmap *pids = NULL;
+
+ assert(directory);
+
+ /* Executes all binaries in a directory in parallel and waits
+ * until all they all finished. */
+
+ if (!d) {
+ if (!(_d = opendir(directory))) {
+
+ if (errno == ENOENT)
+ return;
+
+ log_error("Failed to enumerate directory %s: %m", directory);
+ return;
+ }
+
+ d = _d;
+ }
+
+ if (!(pids = hashmap_new(trivial_hash_func, trivial_compare_func))) {
+ log_error("Failed to allocate set.");
+ goto finish;
+ }
+
+ while ((de = readdir(d))) {
+ char *path;
+ 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)
+ continue;
+
+ if (asprintf(&path, "%s/%s", directory, de->d_name) < 0) {
+ log_error("Out of memory");
+ continue;
+ }
+
+ if ((pid = fork()) < 0) {
+ log_error("Failed to fork: %m");
+ free(path);
+ continue;
+ }
+
+ if (pid == 0) {
+ char *_argv[2];
+ /* Child */
+
+ if (!argv) {
+ _argv[0] = path;
+ _argv[1] = NULL;
+ argv = _argv;
+ } else
+ if (!argv[0])
+ argv[0] = path;
+
+ execv(path, argv);
+
+ log_error("Failed to execute %s: %m", path);
+ _exit(EXIT_FAILURE);
+ }
+
+ log_debug("Spawned %s as %lu", path, (unsigned long) pid);
+
+ if ((k = hashmap_put(pids, UINT_TO_PTR(pid), path)) < 0) {
+ log_error("Failed to add PID to set: %s", strerror(-k));
+ free(path);
+ }
+ }
+
+ while (!hashmap_isempty(pids)) {
+ siginfo_t si;
+ char *path;
+
+ zero(si);
+ if (waitid(P_ALL, 0, &si, WEXITED) < 0) {
+
+ if (errno == EINTR)
+ continue;
+
+ log_error("waitid() failed: %m");
+ goto finish;
+ }
+
+ if ((path = hashmap_remove(pids, UINT_TO_PTR(si.si_pid)))) {
+ if (!is_clean_exit(si.si_code, si.si_status)) {
+ if (si.si_code == CLD_EXITED)
+ log_error("%s exited with exit status %i.", path, si.si_status);
+ else
+ log_error("%s terminated by signal %s.", path, signal_to_string(si.si_status));
+ } else
+ log_debug("%s exited successfully.", path);
+
+ free(path);
+ }
+ }
+
+finish:
+ if (_d)
+ closedir(_d);
+
+ if (pids)
+ hashmap_free_free(pids);
+}
+
+int kill_and_sigcont(pid_t pid, int sig) {
+ int r;
+
+ r = kill(pid, sig) < 0 ? -errno : 0;
+
+ if (r >= 0)
+ kill(pid, SIGCONT);
+
+ return r;
+}
+
+bool nulstr_contains(const char*nulstr, const char *needle) {
+ const char *i;
+
+ if (!nulstr)
+ return false;
+
+ NULSTR_FOREACH(i, nulstr)
+ if (streq(i, needle))
+ return true;
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;
+}
+
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