2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <assert.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <string.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <unistd.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <errno.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <stdlib.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <signal.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <stdio.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <syslog.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sched.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/resource.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <linux/sched.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/types.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/stat.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <fcntl.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <dirent.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/ioctl.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <linux/vt.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <linux/tiocl.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <termios.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <stdarg.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/inotify.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/poll.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <ctype.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/prctl.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/utsname.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <pwd.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <netinet/ip.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <linux/kd.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <dlfcn.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/wait.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/time.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <glob.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <grp.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/mman.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/vfs.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/mount.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <linux/magic.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <limits.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <langinfo.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <locale.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/personality.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <libgen.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#undef basename

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#ifdef HAVE_SYS_AUXV_H

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/auxv.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#endif

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "macro.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "util.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "ioprio.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "missing.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "log.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "strv.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "label.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "mkdir.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "path-util.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "exit-status.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "hashmap.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "env-util.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "fileio.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "device-nodes.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "utf8.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "gunicode.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "virt.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "def.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint saved_argc = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekchar **saved_argv = NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic volatile unsigned cached_columns = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic volatile unsigned cached_lines = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmeksize_t page_size(void) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek static thread_local size_t pgsz = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek long r;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (_likely_(pgsz > 0))

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return pgsz;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek r = sysconf(_SC_PAGESIZE);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(r > 0);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek pgsz = (size_t) r;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return pgsz;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekbool streq_ptr(const char *a, const char *b) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /* Like streq(), but tries to make sense of NULL pointers */

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (a && b)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return streq(a, b);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!a && !b)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return true;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return false;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekchar* endswith(const char *s, const char *postfix) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek size_t sl, pl;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(s);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(postfix);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek sl = strlen(s);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek pl = strlen(postfix);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (pl == 0)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return (char*) s + sl;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (sl < pl)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (memcmp(s + sl - pl, postfix, pl) != 0)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return (char*) s + sl - pl;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekbool first_word(const char *s, const char *word) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek size_t sl, wl;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(s);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(word);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek sl = strlen(s);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek wl = strlen(word);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (sl < wl)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return false;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (wl == 0)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return true;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (memcmp(s, word, wl) != 0)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return false;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return s[wl] == 0 ||

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek strchr(WHITESPACE, s[wl]);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint close_nointr(int fd) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek int r;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(fd >= 0);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek r = close(fd);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (r >= 0)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return r;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek else if (errno == EINTR)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /*

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek else

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -errno;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint safe_close(int fd) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /*

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (fd >= 0) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek PROTECT_ERRNO;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /* The kernel might return pretty much any error code

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert_se(close_nointr(fd) != -EBADF);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -1;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekvoid close_many(const int fds[], unsigned n_fd) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek unsigned i;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(fds || n_fd <= 0);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek for (i = 0; i < n_fd; i++)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek safe_close(fds[i]);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint unlink_noerrno(const char *path) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek PROTECT_ERRNO;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek int r;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek r = unlink(path);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (r < 0)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -errno;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint parse_boolean(const char *v) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(v);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (streq(v, "1") || strcaseeq(v, "yes") || strcaseeq(v, "y") || strcaseeq(v, "true") || strcaseeq(v, "t") || strcaseeq(v, "on"))

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 1;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek else if (streq(v, "0") || strcaseeq(v, "no") || strcaseeq(v, "n") || strcaseeq(v, "false") || strcaseeq(v, "f") || strcaseeq(v, "off"))

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -EINVAL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint parse_pid(const char *s, pid_t* ret_pid) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek unsigned long ul = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek pid_t pid;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek int r;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(s);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(ret_pid);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek r = safe_atolu(s, &ul);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (r < 0)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return r;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek pid = (pid_t) ul;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if ((unsigned long) pid != ul)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ERANGE;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (pid <= 0)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ERANGE;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *ret_pid = pid;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint parse_uid(const char *s, uid_t* ret_uid) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek unsigned long ul = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek uid_t uid;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek int r;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(s);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(ret_uid);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek r = safe_atolu(s, &ul);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (r < 0)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return r;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek uid = (uid_t) ul;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if ((unsigned long) uid != ul)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ERANGE;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /* Some libc APIs use (uid_t) -1 as special placeholder */

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (uid == (uid_t) 0xFFFFFFFF)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ENXIO;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /* A long time ago UIDs where 16bit, hence explicitly avoid the 16bit -1 too */

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (uid == (uid_t) 0xFFFF)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ENXIO;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *ret_uid = uid;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint safe_atou(const char *s, unsigned *ret_u) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *x = NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek unsigned long l;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(s);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(ret_u);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek errno = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek l = strtoul(s, &x, 0);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!x || x == s || *x || errno)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return errno > 0 ? -errno : -EINVAL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if ((unsigned long) (unsigned) l != l)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ERANGE;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *ret_u = (unsigned) l;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint safe_atoi(const char *s, int *ret_i) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *x = NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek long l;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(s);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(ret_i);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek errno = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek l = strtol(s, &x, 0);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!x || x == s || *x || errno)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return errno > 0 ? -errno : -EINVAL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if ((long) (int) l != l)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ERANGE;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *ret_i = (int) l;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint safe_atou8(const char *s, uint8_t *ret) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *x = NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek unsigned long l;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(s);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(ret);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek errno = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek l = strtoul(s, &x, 0);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!x || x == s || *x || errno)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return errno > 0 ? -errno : -EINVAL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if ((unsigned long) (uint8_t) l != l)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ERANGE;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *ret = (uint8_t) l;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint safe_atollu(const char *s, long long unsigned *ret_llu) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *x = NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek unsigned long long l;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(s);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(ret_llu);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek errno = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek l = strtoull(s, &x, 0);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!x || x == s || *x || errno)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return errno ? -errno : -EINVAL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *ret_llu = l;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint safe_atolli(const char *s, long long int *ret_lli) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *x = NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek long long l;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(s);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(ret_lli);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek errno = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek l = strtoll(s, &x, 0);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!x || x == s || *x || errno)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return errno ? -errno : -EINVAL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *ret_lli = l;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint safe_atod(const char *s, double *ret_d) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *x = NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek double d = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(s);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(ret_d);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek RUN_WITH_LOCALE(LC_NUMERIC_MASK, "C") {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek errno = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek d = strtod(s, &x);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!x || x == s || *x || errno)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return errno ? -errno : -EINVAL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *ret_d = (double) d;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic size_t strcspn_escaped(const char *s, const char *reject) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool escaped = false;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek size_t n;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek for (n=0; s[n]; n++) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (escaped)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek escaped = false;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek else if (s[n] == '\\')

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek escaped = true;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek else if (strchr(reject, s[n]))

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek break;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /* if s ends in \, return index of previous char */

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return n - escaped;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekconst char* split(const char **state, size_t *l, const char *separator, bool quoted) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek const char *current;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek current = *state;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!*current) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(**state == '\0');

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek current += strspn(current, separator);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!*current) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *state = current;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (quoted && strchr("\'\"", *current)) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char quotechars[2] = {*current, '\0'};

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *l = strcspn_escaped(current + 1, quotechars);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (current[*l + 1] == '\0' ||

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek (current[*l + 2] && !strchr(separator, current[*l + 2]))) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /* right quote missing or garbage at the end*/

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *state = current;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(current[*l + 1] == quotechars[0]);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *state = current++ + *l + 2;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek } else if (quoted) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *l = strcspn_escaped(current, separator);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *state = current + *l;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek } else {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *l = strcspn(current, separator);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *state = current + *l;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return current;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint get_parent_of_pid(pid_t pid, pid_t *_ppid) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek int r;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek _cleanup_free_ char *line = NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek long unsigned ppid;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek const char *p;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(pid >= 0);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(_ppid);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (pid == 0) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *_ppid = getppid();

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek p = procfs_file_alloca(pid, "stat");

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek r = read_one_line_file(p, &line);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (r < 0)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return r;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /* Let's skip the pid and comm fields. The latter is enclosed

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek p = strrchr(line, ')');

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!p)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -EIO;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek p++;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (sscanf(p, " "

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek "%*c " /* state */

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek "%lu ", /* ppid */

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek &ppid) != 1)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -EIO;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if ((long unsigned) (pid_t) ppid != ppid)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ERANGE;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek *_ppid = (pid_t) ppid;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint get_starttime_of_pid(pid_t pid, unsigned long long *st) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek int r;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek _cleanup_free_ char *line = NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek const char *p;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(pid >= 0);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek assert(st);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

p = procfs_file_alloca(pid, "stat");

r = read_one_line_file(p, &line);

if (r < 0)

return r;

/* Let's skip the pid and comm fields. The latter is enclosed

p = strrchr(line, ')');

if (!p)

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 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;

}

char *truncate_nl(char *s) {

assert(s);

s[strcspn(s, NEWLINE)] = 0;

return s;

}

int get_process_state(pid_t pid) {

const char *p;

char state;

int r;

_cleanup_free_ char *line = NULL;

assert(pid >= 0);

p = procfs_file_alloca(pid, "stat");

r = read_one_line_file(p, &line);

if (r < 0)

return r;

p = strrchr(line, ')');

if (!p)

return -EIO;

p++;

if (sscanf(p, " %c", &state) != 1)

return -EIO;

return (unsigned char) state;

}

int get_process_comm(pid_t pid, char **name) {

const char *p;

int r;

assert(name);

assert(pid >= 0);

p = procfs_file_alloca(pid, "comm");

r = read_one_line_file(p, name);

if (r == -ENOENT)

return -ESRCH;

return r;

}

int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char **line) {

_cleanup_fclose_ FILE *f = NULL;

char *r = NULL, *k;

const char *p;

int c;

assert(line);

assert(pid >= 0);

p = procfs_file_alloca(pid, "cmdline");

f = fopen(p, "re");

if (!f)

return -errno;

if (max_length == 0) {

size_t len = 0, allocated = 0;

while ((c = getc(f)) != EOF) {

if (!GREEDY_REALLOC(r, allocated, len+2)) {

free(r);

return -ENOMEM;

}

r[len++] = isprint(c) ? c : ' ';

}

if (len > 0)

r[len-1] = 0;

} else {

bool space = false;

size_t left;

r = new(char, max_length);

if (!r)

return -ENOMEM;

k = r;

left = max_length;

while ((c = getc(f)) != EOF) {

if (isprint(c)) {

if (space) {

if (left <= 4)

break;

*(k++) = ' ';

left--;

space = false;

}

if (left <= 4)

break;

*(k++) = (char) c;

left--;

} else

space = true;

}

if (left <= 4) {

size_t n = MIN(left-1, 3U);

memcpy(k, "...", n);

k[n] = 0;

} else

*k = 0;

}

/* Kernel threads have no argv[] */

if (r == NULL || r[0] == 0) {

_cleanup_free_ char *t = NULL;

int h;

free(r);

if (!comm_fallback)

return -ENOENT;

h = get_process_comm(pid, &t);

if (h < 0)

return h;

r = strjoin("[", t, "]", NULL);

if (!r)

return -ENOMEM;

}

*line = r;

return 0;

}

int is_kernel_thread(pid_t pid) {

const char *p;

size_t count;

char c;

bool eof;

FILE *f;

if (pid == 0)

return 0;

assert(pid > 0);

p = procfs_file_alloca(pid, "cmdline");

f = fopen(p, "re");

if (!f)

return -errno;

count = fread(&c, 1, 1, f);

eof = feof(f);

fclose(f);

/* Kernel threads have an empty cmdline */

if (count <= 0)

return eof ? 1 : -errno;

return 0;

}

int get_process_capeff(pid_t pid, char **capeff) {

const char *p;

assert(capeff);

assert(pid >= 0);

p = procfs_file_alloca(pid, "status");

return get_status_field(p, "\nCapEff:", capeff);

}

int get_process_exe(pid_t pid, char **name) {

const char *p;

char *d;

int r;

assert(pid >= 0);

assert(name);

p = procfs_file_alloca(pid, "exe");

r = readlink_malloc(p, name);

if (r < 0)

return r == -ENOENT ? -ESRCH : r;

d = endswith(*name, " (deleted)");

if (d)

*d = '\0';

return 0;

}

static int get_process_id(pid_t pid, const char *field, uid_t *uid) {

_cleanup_fclose_ FILE *f = NULL;

char line[LINE_MAX];

const char *p;

assert(field);

assert(uid);

if (pid == 0)

return getuid();

p = procfs_file_alloca(pid, "status");

f = fopen(p, "re");

if (!f)

return -errno;

FOREACH_LINE(line, f, return -errno) {

char *l;

l = strstrip(line);

if (startswith(l, field)) {

l += strlen(field);

l += strspn(l, WHITESPACE);

l[strcspn(l, WHITESPACE)] = 0;

return parse_uid(l, uid);

}

}

return -EIO;

}

int get_process_uid(pid_t pid, uid_t *uid) {

return get_process_id(pid, "Uid:", uid);

}

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);

}

char *strnappend(const char *s, const char *suffix, size_t b) {

size_t a;

char *r;

if (!s && !suffix)

return strdup("");

if (!s)

return strndup(suffix, b);

if (!suffix)

return strdup(s);

assert(s);

assert(suffix);

a = strlen(s);

if (b > ((size_t) -1) - a)

return NULL;

r = new(char, a+b+1);

if (!r)

return NULL;

memcpy(r, s, a);

memcpy(r+a, suffix, b);

r[a+b] = 0;

return r;

}

char *strappend(const char *s, const char *suffix) {

return strnappend(s, suffix, suffix ? strlen(suffix) : 0);

}

int readlinkat_malloc(int fd, const char *p, char **ret) {

size_t l = 100;

int r;

assert(p);

assert(ret);

for (;;) {

char *c;

ssize_t n;

c = new(char, l);

if (!c)

return -ENOMEM;

n = readlinkat(fd, p, c, l-1);

if (n < 0) {

r = -errno;

free(c);

return r;

}

if ((size_t) n < l-1) {

c[n] = 0;

*ret = c;

return 0;

}

free(c);

l *= 2;

}

}

int readlink_malloc(const char *p, char **ret) {

return readlinkat_malloc(AT_FDCWD, p, ret);

}

int readlink_and_make_absolute(const char *p, char **r) {

_cleanup_free_ char *target = NULL;

char *k;

int j;

assert(p);

assert(r);

j = readlink_malloc(p, &target);

if (j < 0)

return j;

k = file_in_same_dir(p, target);

if (!k)

return -ENOMEM;

*r = k;

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 reset_all_signal_handlers(void) {

int sig;

for (sig = 1; sig < _NSIG; sig++) {

struct sigaction sa = {

.sa_handler = SIG_DFL,

.sa_flags = SA_RESTART,

};

if (sig == SIGKILL || sig == SIGSTOP)

continue;

/* On Linux the first two RT signals are reserved by

if ((sigaction(sig, &sa, NULL) < 0))

if (errno != EINVAL)

return -errno;

}

return 0;

}

char *strstrip(char *s) {

char *e;

/* Drops trailing whitespace. Modifies the string in

s += strspn(s, WHITESPACE);

for (e = strchr(s, 0); e > s; e --)

if (!strchr(WHITESPACE, e[-1]))

break;

*e = 0;

return s;

}

char *delete_chars(char *s, const char *bad) {

char *f, *t;

/* Drops all whitespace, regardless where in the string */

for (f = s, t = s; *f; f++) {

if (strchr(bad, *f))

continue;

*(t++) = *f;

}

*t = 0;

return s;

}

char *file_in_same_dir(const char *path, const char *filename) {

char *e, *r;

size_t k;

assert(path);

assert(filename);

/* This removes the last component of path and appends

if (path_is_absolute(filename))

return strdup(filename);

if (!(e = strrchr(path, '/')))

return strdup(filename);

k = strlen(filename);

if (!(r = new(char, e-path+1+k+1)))

return NULL;

memcpy(r, path, e-path+1);

memcpy(r+(e-path)+1, filename, k+1);

return r;

}

int rmdir_parents(const char *path, const char *stop) {

size_t l;

int r = 0;

assert(path);

assert(stop);

l = strlen(path);

/* Skip trailing slashes */

while (l > 0 && path[l-1] == '/')

l--;

while (l > 0) {

char *t;

/* Skip last component */

while (l > 0 && path[l-1] != '/')

l--;

/* Skip trailing slashes */

while (l > 0 && path[l-1] == '/')

l--;

if (l <= 0)

break;

if (!(t = strndup(path, l)))

return -ENOMEM;

if (path_startswith(stop, t)) {

free(t);

return 0;

}

r = rmdir(t);

free(t);

if (r < 0)

if (errno != ENOENT)

return -errno;

}

return 0;

}

char hexchar(int x) {

static const char table[16] = "0123456789abcdef";

return table[x & 15];

}

int unhexchar(char c) {

if (c >= '0' && c <= '9')

return c - '0';

if (c >= 'a' && c <= 'f')

return c - 'a' + 10;

if (c >= 'A' && c <= 'F')

return c - 'A' + 10;

return -1;

}

char *hexmem(const void *p, size_t l) {

char *r, *z;

const uint8_t *x;

z = r = malloc(l * 2 + 1);

if (!r)

return NULL;

for (x = p; x < (const uint8_t*) p + l; x++) {

*(z++) = hexchar(*x >> 4);

*(z++) = hexchar(*x & 15);

}

*z = 0;

return r;

}

void *unhexmem(const char *p, size_t l) {

uint8_t *r, *z;

const char *x;

assert(p);

z = r = malloc((l + 1) / 2 + 1);

if (!r)

return NULL;

for (x = p; x < p + l; x += 2) {

int a, b;

a = unhexchar(x[0]);

if (x+1 < p + l)

b = unhexchar(x[1]);

else

b = 0;

*(z++) = (uint8_t) a << 4 | (uint8_t) b;

}

*z = 0;

return r;

}

char octchar(int x) {

return '0' + (x & 7);

}

int unoctchar(char c) {

if (c >= '0' && c <= '7')

return c - '0';

return -1;

}

char decchar(int x) {

return '0' + (x % 10);

}

int undecchar(char c) {

if (c >= '0' && c <= '9')

return c - '0';

return -1;

}

char *cescape(const char *s) {

char *r, *t;

const char *f;

assert(s);

/* Does C style string escaping. */

r = new(char, strlen(s)*4 + 1);

if (!r)

return NULL;

for (f = s, t = r; *f; f++)

switch (*f) {

case '\a':

*(t++) = '\\';

*(t++) = 'a';

break;

case '\b':

*(t++) = '\\';

*(t++) = 'b';

break;

case '\f':

*(t++) = '\\';

*(t++) = 'f';

break;

case '\n':

*(t++) = '\\';

*(t++) = 'n';

break;

case '\r':

*(t++) = '\\';

*(t++) = 'r';

break;

case '\t':

*(t++) = '\\';

*(t++) = 't';

break;

case '\v':

*(t++) = '\\';

*(t++) = 'v';

break;

case '\\':

*(t++) = '\\';

*(t++) = '\\';

break;

case '"':

*(t++) = '\\';

*(t++) = '"';

break;

case '\'':

*(t++) = '\\';

*(t++) = '\'';

break;

default:

/* For special chars we prefer octal over

if ((*f < ' ') || (*f >= 127)) {

*(t++) = '\\';

*(t++) = octchar((unsigned char) *f >> 6);

*(t++) = octchar((unsigned char) *f >> 3);

*(t++) = octchar((unsigned char) *f);

} else

*(t++) = *f;

break;

}

*t = 0;

return r;

}

char *cunescape_length_with_prefix(const char *s, size_t length, const char *prefix) {

char *r, *t;

const char *f;

size_t pl;

assert(s);

/* Undoes C style string escaping, and optionally prefixes it. */

pl = prefix ? strlen(prefix) : 0;

r = new(char, pl+length+1);

if (!r)

return r;

if (prefix)

memcpy(r, prefix, pl);

for (f = s, t = r + pl; f < s + length; f++) {

if (*f != '\\') {

*(t++) = *f;

continue;

}

f++;

switch (*f) {

case 'a':

*(t++) = '\a';

break;

case 'b':

*(t++) = '\b';

break;

case 'f':

*(t++) = '\f';

break;

case 'n':

*(t++) = '\n';

break;

case 'r':

*(t++) = '\r';

break;

case 't':

*(t++) = '\t';

break;

case 'v':

*(t++) = '\v';

break;

case '\\':

*(t++) = '\\';

break;

case '"':

*(t++) = '"';

break;

case '\'':

*(t++) = '\'';

break;

case 's':

/* This is an extension of the XDG syntax files */

*(t++) = ' ';

break;

case 'x': {

/* hexadecimal encoding */

int a, b;

a = unhexchar(f[1]);

b = unhexchar(f[2]);

if (a < 0 || b < 0 || (a == 0 && b == 0)) {

/* Invalid escape code, let's take it literal then */

*(t++) = '\\';

*(t++) = 'x';

} else {

*(t++) = (char) ((a << 4) | b);

f += 2;

}

break;

}

case '0':

case '1':

case '2':

case '3':

case '4':

case '5':

case '6':

case '7': {

/* octal encoding */

int a, b, c;

a = unoctchar(f[0]);

b = unoctchar(f[1]);

c = unoctchar(f[2]);

if (a < 0 || b < 0 || c < 0 || (a == 0 && b == 0 && c == 0)) {

/* Invalid escape code, let's take it literal then */

*(t++) = '\\';

*(t++) = f[0];

} else {

*(t++) = (char) ((a << 6) | (b << 3) | c);

f += 2;

}

break;

}

case 0:

/* premature end of string.*/

*(t++) = '\\';

goto finish;

default:

/* Invalid escape code, let's take it literal then */

*(t++) = '\\';

*(t++) = *f;

break;

}

}

finish:

*t = 0;

return r;

}

char *cunescape_length(const char *s, size_t length) {

return cunescape_length_with_prefix(s, length, NULL);

}

char *cunescape(const char *s) {

assert(s);

return cunescape_length(s, strlen(s));

}

char *xescape(const char *s, const char *bad) {

char *r, *t;

const char *f;

/* Escapes all chars in bad, in addition to \ and all special

r = new(char, strlen(s) * 4 + 1);

if (!r)

return NULL;

for (f = s, t = r; *f; f++) {

if ((*f < ' ') || (*f >= 127) ||

(*f == '\\') || strchr(bad, *f)) {

*(t++) = '\\';

*(t++) = 'x';

*(t++) = hexchar(*f >> 4);

*(t++) = hexchar(*f);

} else

*(t++) = *f;

}

*t = 0;

return r;

}

char *ascii_strlower(char *t) {

char *p;

assert(t);

for (p = t; *p; p++)

if (*p >= 'A' && *p <= 'Z')

*p = *p - 'A' + 'a';

return t;

}

_pure_ static bool ignore_file_allow_backup(const char *filename) {

assert(filename);

return

filename[0] == '.' ||

streq(filename, "lost+found") ||

streq(filename, "aquota.user") ||

streq(filename, "aquota.group") ||

endswith(filename, ".rpmnew") ||

endswith(filename, ".rpmsave") ||

endswith(filename, ".rpmorig") ||

endswith(filename, ".dpkg-old") ||

endswith(filename, ".dpkg-new") ||

endswith(filename, ".swp");

}

bool ignore_file(const char *filename) {

assert(filename);

if (endswith(filename, "~"))

return true;

return ignore_file_allow_backup(filename);

}

int fd_nonblock(int fd, bool nonblock) {

int flags, nflags;

assert(fd >= 0);

flags = fcntl(fd, F_GETFL, 0);

if (flags < 0)

return -errno;

if (nonblock)

nflags = flags | O_NONBLOCK;

else

nflags = flags & ~O_NONBLOCK;

if (nflags == flags)

return 0;

if (fcntl(fd, F_SETFL, nflags) < 0)

return -errno;

return 0;

}

int fd_cloexec(int fd, bool cloexec) {

int flags, nflags;