along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <stdbool.h>
-#include <sys/types.h>
-#include <string.h>
-#include <stdio.h>
#include <assert.h>
+#include <ctype.h>
#include <errno.h>
-#include <unistd.h>
-#include <sys/wait.h>
+#include <sched.h>
#include <signal.h>
-#include <ctype.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/personality.h>
+#include <sys/prctl.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include "alloc-util.h"
+#include "escape.h"
+#include "fd-util.h"
#include "fileio.h"
-#include "util.h"
+#include "fs-util.h"
+//#include "ioprio.h"
#include "log.h"
-#include "signal-util.h"
#include "process-util.h"
+#include "signal-util.h"
+#include "string-table.h"
+#include "string-util.h"
+#include "user-util.h"
+#include "util.h"
int get_process_state(pid_t pid) {
const char *p;
assert(pid >= 0);
p = procfs_file_alloca(pid, "stat");
+
r = read_one_line_file(p, &line);
+ if (r == -ENOENT)
+ return -ESRCH;
if (r < 0)
return r;
p = procfs_file_alloca(pid, "cmdline");
f = fopen(p, "re");
- if (!f)
+ if (!f) {
+ if (errno == ENOENT)
+ return -ESRCH;
return -errno;
+ }
if (max_length == 0) {
size_t len = 0, allocated = 0;
return 0;
}
+/// UNNEEDED by elogind
+#if 0
+void rename_process(const char name[8]) {
+ assert(name);
+
+ /* This is a like a poor man's setproctitle(). It changes the
+ * comm field, argv[0], and also the glibc's internally used
+ * name of the process. For the first one a limit of 16 chars
+ * applies, to the second one usually one of 10 (i.e. length
+ * of "/sbin/init"), to the third one one of 7 (i.e. length of
+ * "systemd"). If you pass a longer string it will be
+ * truncated */
+
+ prctl(PR_SET_NAME, name);
+
+ 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;
+
+ memzero(saved_argv[i], strlen(saved_argv[i]));
+ }
+ }
+}
+#endif // 0
+
int is_kernel_thread(pid_t pid) {
const char *p;
size_t count;
bool eof;
FILE *f;
- if (pid == 0)
+ if (pid == 0 || pid == 1) /* pid 1, and we ourselves certainly aren't a kernel thread */
return 0;
- assert(pid > 0);
+ assert(pid > 1);
p = procfs_file_alloca(pid, "cmdline");
f = fopen(p, "re");
- if (!f)
+ if (!f) {
+ if (errno == ENOENT)
+ return -ESRCH;
return -errno;
+ }
count = fread(&c, 1, 1, f);
eof = feof(f);
#if 0
int get_process_capeff(pid_t pid, char **capeff) {
const char *p;
+ int r;
assert(capeff);
assert(pid >= 0);
p = procfs_file_alloca(pid, "status");
- return get_status_field(p, "\nCapEff:", capeff);
+ r = get_proc_field(p, "CapEff", WHITESPACE, capeff);
+ if (r == -ENOENT)
+ return -ESRCH;
+
+ return r;
}
#endif // 0
assert(name);
r = readlink_malloc(proc_file, name);
+ if (r == -ENOENT)
+ return -ESRCH;
if (r < 0)
- return r == -ENOENT ? -ESRCH : r;
+ return r;
return 0;
}
return 0;
}
+/// UNNEEDED by elogind
+#if 0
static int get_process_id(pid_t pid, const char *field, uid_t *uid) {
_cleanup_fclose_ FILE *f = NULL;
char line[LINE_MAX];
p = procfs_file_alloca(pid, "status");
f = fopen(p, "re");
- if (!f)
+ if (!f) {
+ if (errno == ENOENT)
+ return -ESRCH;
return -errno;
+ }
FOREACH_LINE(line, f, return -errno) {
char *l;
return get_process_id(pid, "Uid:", uid);
}
-/// UNNEEDED by elogind
-#if 0
int get_process_gid(pid_t pid, gid_t *gid) {
assert_cc(sizeof(uid_t) == sizeof(gid_t));
return get_process_id(pid, "Gid:", gid);
p = procfs_file_alloca(pid, "environ");
f = fopen(p, "re");
- if (!f)
+ if (!f) {
+ if (errno == ENOENT)
+ return -ESRCH;
return -errno;
+ }
while ((c = fgetc(f)) != EOF) {
if (!GREEDY_REALLOC(outcome, allocated, sz + 5))
sz += cescape_char(c, outcome + sz);
}
+ if (!outcome) {
+ outcome = strdup("");
+ if (!outcome)
+ return -ENOMEM;
+ } else
outcome[sz] = '\0';
+
*env = outcome;
outcome = NULL;
return 0;
}
-#endif // 0
-int get_parent_of_pid(pid_t pid, pid_t *_ppid) {
+int get_process_ppid(pid_t pid, pid_t *_ppid) {
int r;
_cleanup_free_ char *line = NULL;
long unsigned ppid;
p = procfs_file_alloca(pid, "stat");
r = read_one_line_file(p, &line);
+ if (r == -ENOENT)
+ return -ESRCH;
if (r < 0)
return r;
return 0;
}
+#endif // 0
int wait_for_terminate(pid_t pid, siginfo_t *status) {
siginfo_t dummy;
return -EPROTO;
}
+void sigkill_wait(pid_t *pid) {
+ if (!pid)
+ return;
+ if (*pid <= 1)
+ return;
+
+ if (kill(*pid, SIGKILL) > 0)
+ (void) wait_for_terminate(*pid, NULL);
+}
+
+/// UNNEEDED by elogind
+#if 0
int kill_and_sigcont(pid_t pid, int sig) {
int r;
return r;
}
+#endif // 0
int getenv_for_pid(pid_t pid, const char *field, char **_value) {
_cleanup_fclose_ FILE *f = NULL;
path = procfs_file_alloca(pid, "environ");
f = fopen(path, "re");
- if (!f)
+ if (!f) {
+ if (errno == ENOENT)
+ return -ESRCH;
return -errno;
+ }
l = strlen(field);
r = 0;
bool pid_is_unwaited(pid_t pid) {
/* Checks whether a PID is still valid at all, including a zombie */
- if (pid <= 0)
+ if (pid < 0)
return false;
+ if (pid <= 1) /* If we or PID 1 would be dead and have been waited for, this code would not be running */
+ return true;
+
if (kill(pid, 0) >= 0)
return true;
/* Checks whether a PID is still valid and not a zombie */
- if (pid <= 0)
+ if (pid < 0)
return false;
+ if (pid <= 1) /* If we or PID 1 would be a zombie, this code would not be running */
+ return true;
+
r = get_process_state(pid);
- if (r == -ENOENT || r == 'Z')
+ if (r == -ESRCH || r == 'Z')
return false;
return true;
}
+
+bool is_main_thread(void) {
+ static thread_local int cached = 0;
+
+ if (_unlikely_(cached == 0))
+ cached = getpid() == gettid() ? 1 : -1;
+
+ return cached > 0;
+}
+
+/// UNNEEDED by elogind
+#if 0
+noreturn void freeze(void) {
+
+ /* Make sure nobody waits for us on a socket anymore */
+ close_all_fds(NULL, 0);
+
+ sync();
+
+ for (;;)
+ pause();
+}
+
+bool oom_score_adjust_is_valid(int oa) {
+ return oa >= OOM_SCORE_ADJ_MIN && oa <= OOM_SCORE_ADJ_MAX;
+}
+
+unsigned long personality_from_string(const char *p) {
+
+ /* Parse a personality specifier. We introduce our own
+ * identifiers that indicate specific ABIs, rather than just
+ * hints regarding the register size, since we want to keep
+ * things open for multiple locally supported ABIs for the
+ * same register size. We try to reuse the ABI identifiers
+ * used by libseccomp. */
+
+#if defined(__x86_64__)
+
+ if (streq(p, "x86"))
+ return PER_LINUX32;
+
+ if (streq(p, "x86-64"))
+ return PER_LINUX;
+
+#elif defined(__i386__)
+
+ if (streq(p, "x86"))
+ return PER_LINUX;
+
+#elif defined(__s390x__)
+
+ if (streq(p, "s390"))
+ return PER_LINUX32;
+
+ if (streq(p, "s390x"))
+ return PER_LINUX;
+
+#elif defined(__s390__)
+
+ if (streq(p, "s390"))
+ return PER_LINUX;
+#endif
+
+ return PERSONALITY_INVALID;
+}
+
+const char* personality_to_string(unsigned long p) {
+
+#if defined(__x86_64__)
+
+ if (p == PER_LINUX32)
+ return "x86";
+
+ if (p == PER_LINUX)
+ return "x86-64";
+
+#elif defined(__i386__)
+
+ if (p == PER_LINUX)
+ return "x86";
+
+#elif defined(__s390x__)
+
+ if (p == PER_LINUX)
+ return "s390x";
+
+ if (p == PER_LINUX32)
+ return "s390";
+
+#elif defined(__s390__)
+
+ if (p == PER_LINUX)
+ return "s390";
+
+#endif
+
+ return NULL;
+}
+
+static const char *const ioprio_class_table[] = {
+ [IOPRIO_CLASS_NONE] = "none",
+ [IOPRIO_CLASS_RT] = "realtime",
+ [IOPRIO_CLASS_BE] = "best-effort",
+ [IOPRIO_CLASS_IDLE] = "idle"
+};
+
+DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(ioprio_class, int, INT_MAX);
+
+static const char *const sigchld_code_table[] = {
+ [CLD_EXITED] = "exited",
+ [CLD_KILLED] = "killed",
+ [CLD_DUMPED] = "dumped",
+ [CLD_TRAPPED] = "trapped",
+ [CLD_STOPPED] = "stopped",
+ [CLD_CONTINUED] = "continued",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(sigchld_code, int);
+
+static const char* const sched_policy_table[] = {
+ [SCHED_OTHER] = "other",
+ [SCHED_BATCH] = "batch",
+ [SCHED_IDLE] = "idle",
+ [SCHED_FIFO] = "fifo",
+ [SCHED_RR] = "rr"
+};
+
+DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(sched_policy, int, INT_MAX);
+#endif // 0
~ianmdlvl / elogind.git / blobdiff