X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=util.c;h=a0f26762dc39b87b3f6cb3c24acb50db14849512;hp=4bec220f7a1dbfad1c1868d8228d973bb77863df;hb=db12775d59ab709f8afc361eaa30c9d54a0a8d7c;hpb=a41e8209be729cd8de34d715135fe84920e8016c
diff --git a/util.c b/util.c
index 4bec220f7..a0f26762d 100644
--- a/util.c
+++ b/util.c
@@ -1,18 +1,51 @@
/*-*- Mode: C; c-basic-offset: 8 -*-*/
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see .
+***/
+
#include
#include
#include
#include
#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
#include "macro.h"
#include "util.h"
+#include "ioprio.h"
+#include "missing.h"
+#include "log.h"
+#include "strv.h"
-usec_t now(clockid_t clock) {
+usec_t now(clockid_t clock_id) {
struct timespec ts;
- assert_se(clock_gettime(clock, &ts) == 0);
+ assert_se(clock_gettime(clock_id, &ts) == 0);
return timespec_load(&ts);
}
@@ -81,7 +114,26 @@ bool startswith(const char *s, const char *prefix) {
return memcmp(s, prefix, pl) == 0;
}
-int nointr_close(int fd) {
+bool first_word(const char *s, const char *word) {
+ size_t sl, wl;
+
+ assert(s);
+ assert(word);
+
+ sl = strlen(s);
+ wl = strlen(word);
+
+ if (sl < wl)
+ return false;
+
+ if (memcmp(s, word, wl) != 0)
+ return false;
+
+ return (s[wl] == 0 ||
+ strchr(WHITESPACE, s[wl]));
+}
+
+int close_nointr(int fd) {
assert(fd >= 0);
for (;;) {
@@ -95,12 +147,20 @@ int nointr_close(int fd) {
}
}
+void close_nointr_nofail(int fd) {
+
+ /* like close_nointr() but cannot fail, and guarantees errno
+ * is unchanged */
+
+ assert_se(close_nointr(fd) == 0);
+}
+
int parse_boolean(const char *v) {
assert(v);
- if (!strcmp(v, "1") || v[0] == 'y' || v[0] == 'Y' || v[0] == 't' || v[0] == 'T' || !strcasecmp(v, "on"))
+ if (streq(v, "1") || v[0] == 'y' || v[0] == 'Y' || v[0] == 't' || v[0] == 'T' || !strcasecmp(v, "on"))
return 1;
- else if (!strcmp(v, "0") || v[0] == 'n' || v[0] == 'N' || v[0] == 'f' || v[0] == 'F' || !strcasecmp(v, "off"))
+ else if (streq(v, "0") || v[0] == 'n' || v[0] == 'N' || v[0] == 'f' || v[0] == 'F' || !strcasecmp(v, "off"))
return 0;
return -EINVAL;
@@ -108,7 +168,7 @@ int parse_boolean(const char *v) {
int safe_atou(const char *s, unsigned *ret_u) {
char *x = NULL;
- unsigned l;
+ unsigned long l;
assert(s);
assert(ret_u);
@@ -119,7 +179,7 @@ int safe_atou(const char *s, unsigned *ret_u) {
if (!x || *x || errno)
return errno ? -errno : -EINVAL;
- if ((unsigned) l != l)
+ if ((unsigned long) (unsigned) l != l)
return -ERANGE;
*ret_u = (unsigned) l;
@@ -128,7 +188,7 @@ int safe_atou(const char *s, unsigned *ret_u) {
int safe_atoi(const char *s, int *ret_i) {
char *x = NULL;
- int l;
+ long l;
assert(s);
assert(ret_i);
@@ -139,18 +199,83 @@ int safe_atoi(const char *s, int *ret_i) {
if (!x || *x || errno)
return errno ? -errno : -EINVAL;
- if ((int) l != l)
+ if ((long) (int) l != l)
return -ERANGE;
- *ret_i = (unsigned) l;
+ *ret_i = (int) l;
+ return 0;
+}
+
+int safe_atolu(const char *s, long unsigned *ret_lu) {
+ char *x = NULL;
+ unsigned long l;
+
+ assert(s);
+ assert(ret_lu);
+
+ errno = 0;
+ l = strtoul(s, &x, 0);
+
+ if (!x || *x || errno)
+ return errno ? -errno : -EINVAL;
+
+ *ret_lu = l;
+ return 0;
+}
+
+int safe_atoli(const char *s, long int *ret_li) {
+ char *x = NULL;
+ long l;
+
+ assert(s);
+ assert(ret_li);
+
+ errno = 0;
+ l = strtol(s, &x, 0);
+
+ if (!x || *x || errno)
+ return errno ? -errno : -EINVAL;
+
+ *ret_li = l;
+ return 0;
+}
+
+int safe_atollu(const char *s, long long unsigned *ret_llu) {
+ char *x = NULL;
+ unsigned long long l;
+
+ assert(s);
+ assert(ret_llu);
+
+ errno = 0;
+ l = strtoull(s, &x, 0);
+
+ if (!x || *x || errno)
+ return errno ? -errno : -EINVAL;
+
+ *ret_llu = l;
return 0;
}
-/* What is interpreted as whitespace? */
-#define WHITESPACE " \t\n"
+int safe_atolli(const char *s, long long int *ret_lli) {
+ char *x = NULL;
+ long long l;
+
+ assert(s);
+ assert(ret_lli);
+
+ errno = 0;
+ l = strtoll(s, &x, 0);
+
+ if (!x || *x || errno)
+ return errno ? -errno : -EINVAL;
+
+ *ret_lli = l;
+ return 0;
+}
/* Split a string into words. */
-char *split_spaces(const char *c, size_t *l, char **state) {
+char *split(const char *c, size_t *l, const char *separator, char **state) {
char *current;
current = *state ? *state : (char*) c;
@@ -158,9 +283,1012 @@ char *split_spaces(const char *c, size_t *l, char **state) {
if (!*current || *c == 0)
return NULL;
- current += strspn(current, WHITESPACE);
- *l = strcspn(current, WHITESPACE);
+ current += strspn(current, separator);
+ *l = strcspn(current, separator);
*state = current+*l;
return (char*) current;
}
+
+/* Split a string into words, but consider strings enclosed in '' and
+ * "" as words even if they include spaces. */
+char *split_quoted(const char *c, size_t *l, char **state) {
+ char *current;
+
+ current = *state ? *state : (char*) c;
+
+ if (!*current || *c == 0)
+ return NULL;
+
+ current += strspn(current, WHITESPACE);
+
+ if (*current == '\'') {
+ current ++;
+ *l = strcspn(current, "'");
+ *state = current+*l;
+
+ if (**state == '\'')
+ (*state)++;
+ } else if (*current == '\"') {
+ current ++;
+ *l = strcspn(current, "\"");
+ *state = current+*l;
+
+ if (**state == '\"')
+ (*state)++;
+ } else {
+ *l = strcspn(current, WHITESPACE);
+ *state = current+*l;
+ }
+
+ /* FIXME: Cannot deal with strings that have spaces AND ticks
+ * in them */
+
+ return (char*) current;
+}
+
+char **split_path_and_make_absolute(const char *p) {
+ char **l;
+ assert(p);
+
+ if (!(l = strv_split(p, ":")))
+ return NULL;
+
+ if (!strv_path_make_absolute_cwd(l)) {
+ strv_free(l);
+ return NULL;
+ }
+
+ return l;
+}
+
+int get_parent_of_pid(pid_t pid, pid_t *_ppid) {
+ int r;
+ FILE *f;
+ char fn[132], line[256], *p;
+ long long unsigned ppid;
+
+ assert(pid >= 0);
+ assert(_ppid);
+
+ assert_se(snprintf(fn, sizeof(fn)-1, "/proc/%llu/stat", (unsigned long long) pid) < (int) (sizeof(fn)-1));
+ fn[sizeof(fn)-1] = 0;
+
+ 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 */
+ "%llu ", /* ppid */
+ &ppid) != 1)
+ return -EIO;
+
+ if ((long long unsigned) (pid_t) ppid != ppid)
+ return -ERANGE;
+
+ *_ppid = (pid_t) ppid;
+
+ return 0;
+}
+
+int write_one_line_file(const char *fn, const char *line) {
+ FILE *f;
+ int r;
+
+ assert(fn);
+ assert(line);
+
+ if (!(f = fopen(fn, "we")))
+ return -errno;
+
+ if (fputs(line, f) < 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ r = 0;
+finish:
+ fclose(f);
+ return r;
+}
+
+int read_one_line_file(const char *fn, char **line) {
+ FILE *f;
+ int r;
+ char t[64], *c;
+
+ assert(fn);
+ assert(line);
+
+ if (!(f = fopen(fn, "re")))
+ return -errno;
+
+ if (!(fgets(t, sizeof(t), f))) {
+ r = -errno;
+ goto finish;
+ }
+
+ if (!(c = strdup(t))) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ *line = c;
+ r = 0;
+
+finish:
+ fclose(f);
+ return r;
+}
+
+char *strappend(const char *s, const char *suffix) {
+ size_t a, b;
+ char *r;
+
+ assert(s);
+ assert(suffix);
+
+ a = strlen(s);
+ b = strlen(suffix);
+
+ if (!(r = new(char, a+b+1)))
+ return NULL;
+
+ memcpy(r, s, a);
+ memcpy(r+a, suffix, b);
+ r[a+b] = 0;
+
+ return r;
+}
+
+int readlink_malloc(const char *p, char **r) {
+ size_t l = 100;
+
+ assert(p);
+ assert(r);
+
+ for (;;) {
+ char *c;
+ ssize_t n;
+
+ if (!(c = new(char, l)))
+ return -ENOMEM;
+
+ if ((n = readlink(p, c, l-1)) < 0) {
+ int ret = -errno;
+ free(c);
+ return ret;
+ }
+
+ if ((size_t) n < l-1) {
+ c[n] = 0;
+ *r = c;
+ return 0;
+ }
+
+ free(c);
+ l *= 2;
+ }
+}
+
+char *file_name_from_path(const char *p) {
+ char *r;
+
+ assert(p);
+
+ if ((r = strrchr(p, '/')))
+ return r + 1;
+
+ return (char*) p;
+}
+
+bool path_is_absolute(const char *p) {
+ assert(p);
+
+ return p[0] == '/';
+}
+
+bool is_path(const char *p) {
+
+ return !!strchr(p, '/');
+}
+
+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
+ * the prefix, if specified and necessary */
+
+ if (path_is_absolute(p) || !prefix)
+ return strdup(p);
+
+ if (asprintf(&r, "%s/%s", prefix, p) < 0)
+ return NULL;
+
+ return r;
+}
+
+char *path_make_absolute_cwd(const char *p) {
+ char *cwd, *r;
+
+ assert(p);
+
+ /* Similar to path_make_absolute(), but prefixes with the
+ * current working directory. */
+
+ if (path_is_absolute(p))
+ return strdup(p);
+
+ if (!(cwd = get_current_dir_name()))
+ return NULL;
+
+ r = path_make_absolute(p, cwd);
+ free(cwd);
+
+ return r;
+}
+
+char **strv_path_make_absolute_cwd(char **l) {
+ char **s;
+
+ /* Goes through every item in the string list and makes it
+ * absolute. This works in place and won't rollback any
+ * changes on failure. */
+
+ STRV_FOREACH(s, l) {
+ char *t;
+
+ if (!(t = path_make_absolute_cwd(*s)))
+ return NULL;
+
+ free(*s);
+ *s = t;
+ }
+
+ return l;
+}
+
+int reset_all_signal_handlers(void) {
+ int sig;
+
+ for (sig = 1; sig < _NSIG; sig++) {
+ struct sigaction sa;
+
+ if (sig == SIGKILL || sig == SIGSTOP)
+ continue;
+
+ zero(sa);
+ sa.sa_handler = SIG_DFL;
+ sa.sa_flags = SA_RESTART;
+
+ /* On Linux the first two RT signals are reserved by
+ * glibc, and sigaction() will return EINVAL for them. */
+ if ((sigaction(sig, &sa, NULL) < 0))
+ if (errno != EINVAL)
+ return -errno;
+ }
+
+ return 0;
+}
+
+char *strstrip(char *s) {
+ char *e, *l = NULL;
+
+ /* 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;
+
+ if (l)
+ *(l+1) = 0;
+ else
+ *s = 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
+ * filename, unless the latter is absolute anyway or the
+ * former isn't */
+
+ 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 mkdir_parents(const char *path, mode_t mode) {
+ const char *p, *e;
+
+ assert(path);
+
+ /* Creates every parent directory in the path except the last
+ * component. */
+
+ p = path + strspn(path, "/");
+ for (;;) {
+ int r;
+ char *t;
+
+ e = p + strcspn(p, "/");
+ p = e + strspn(e, "/");
+
+ /* Is this the last component? If so, then we're
+ * done */
+ if (*p == 0)
+ return 0;
+
+ if (!(t = strndup(path, e - path)))
+ return -ENOMEM;
+
+ r = mkdir(t, mode);
+
+ free(t);
+
+ if (r < 0 && errno != EEXIST)
+ return -errno;
+ }
+}
+
+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 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. */
+
+ if (!(r = new(char, strlen(s)*4 + 1)))
+ 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
+ * hexadecimal encoding, simply because glib's
+ * g_strescape() does the same */
+ 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(const char *s) {
+ char *r, *t;
+ const char *f;
+
+ assert(s);
+
+ /* Undoes C style string escaping */
+
+ if (!(r = new(char, strlen(s)+1)))
+ return r;
+
+ for (f = s, t = r; *f; 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 'x': {
+ /* hexadecimal encoding */
+ int a, b;
+
+ if ((a = unhexchar(f[1])) < 0 ||
+ (b = unhexchar(f[2])) < 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;
+
+ if ((a = unoctchar(f[0])) < 0 ||
+ (b = unoctchar(f[1])) < 0 ||
+ (c = unoctchar(f[2])) < 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 *xescape(const char *s, const char *bad) {
+ char *r, *t;
+ const char *f;
+
+ /* Escapes all chars in bad, in addition to \ and all special
+ * chars, in \xFF style escaping. May be reversed with
+ * cunescape. */
+
+ if (!(r = new(char, strlen(s)*4+1)))
+ 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 *bus_path_escape(const char *s) {
+ char *r, *t;
+ const char *f;
+
+ assert(s);
+
+ /* Escapes all chars that D-Bus' object path cannot deal
+ * with. Can be reverse with bus_path_unescape() */
+
+ if (!(r = new(char, strlen(s)*3+1)))
+ return NULL;
+
+ for (f = s, t = r; *f; f++) {
+
+ if (!(*f >= 'A' && *f <= 'Z') &&
+ !(*f >= 'a' && *f <= 'z') &&
+ !(*f >= '0' && *f <= '9')) {
+ *(t++) = '_';
+ *(t++) = hexchar(*f >> 4);
+ *(t++) = hexchar(*f);
+ } else
+ *(t++) = *f;
+ }
+
+ *t = 0;
+
+ return r;
+}
+
+char *bus_path_unescape(const char *s) {
+ char *r, *t;
+ const char *f;
+
+ assert(s);
+
+ if (!(r = new(char, strlen(s)+1)))
+ return NULL;
+
+ for (f = s, t = r; *f; f++) {
+
+ if (*f == '_') {
+ int a, b;
+
+ if ((a = unhexchar(f[1])) < 0 ||
+ (b = unhexchar(f[2])) < 0) {
+ /* Invalid escape code, let's take it literal then */
+ *(t++) = '_';
+ } else {
+ *(t++) = (char) ((a << 4) | b);
+ f += 2;
+ }
+ } else
+ *(t++) = *f;
+ }
+
+ *t = 0;
+
+ return r;
+}
+
+char *path_kill_slashes(char *path) {
+ char *f, *t;
+ bool slash = false;
+
+ /* Removes redundant inner and trailing slashes. Modifies the
+ * passed string in-place.
+ *
+ * ///foo///bar/ becomes /foo/bar
+ */
+
+ for (f = path, t = path; *f; f++) {
+
+ if (*f == '/') {
+ slash = true;
+ continue;
+ }
+
+ if (slash) {
+ slash = false;
+ *(t++) = '/';
+ }
+
+ *(t++) = *f;
+ }
+
+ /* Special rule, if we are talking of the root directory, a
+ trailing slash is good */
+
+ if (t == path && slash)
+ *(t++) = '/';
+
+ *t = 0;
+ return path;
+}
+
+bool path_startswith(const char *path, const char *prefix) {
+ assert(path);
+ assert(prefix);
+
+ if ((path[0] == '/') != (prefix[0] == '/'))
+ return false;
+
+ for (;;) {
+ size_t a, b;
+
+ path += strspn(path, "/");
+ prefix += strspn(prefix, "/");
+
+ if (*prefix == 0)
+ return true;
+
+ if (*path == 0)
+ return false;
+
+ a = strcspn(path, "/");
+ b = strcspn(prefix, "/");
+
+ if (a != b)
+ return false;
+
+ if (memcmp(path, prefix, a) != 0)
+ return false;
+
+ path += a;
+ prefix += b;
+ }
+}
+
+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;
+}
+
+bool ignore_file(const char *filename) {
+ assert(filename);
+
+ return
+ filename[0] == '.' ||
+ endswith(filename, "~") ||
+ endswith(filename, ".rpmnew") ||
+ endswith(filename, ".rpmsave") ||
+ endswith(filename, ".rpmorig") ||
+ endswith(filename, ".dpkg-old") ||
+ endswith(filename, ".dpkg-new") ||
+ endswith(filename, ".swp");
+}
+
+int fd_nonblock(int fd, bool nonblock) {
+ int flags;
+
+ assert(fd >= 0);
+
+ if ((flags = fcntl(fd, F_GETFL, 0)) < 0)
+ return -errno;
+
+ if (nonblock)
+ flags |= O_NONBLOCK;
+ else
+ flags &= ~O_NONBLOCK;
+
+ if (fcntl(fd, F_SETFL, flags) < 0)
+ return -errno;
+
+ return 0;
+}
+
+int fd_cloexec(int fd, bool cloexec) {
+ int flags;
+
+ assert(fd >= 0);
+
+ if ((flags = fcntl(fd, F_GETFD, 0)) < 0)
+ return -errno;
+
+ if (cloexec)
+ flags |= FD_CLOEXEC;
+ else
+ flags &= ~FD_CLOEXEC;
+
+ if (fcntl(fd, F_SETFD, flags) < 0)
+ return -errno;
+
+ return 0;
+}
+
+int close_all_fds(const int except[], unsigned n_except) {
+ DIR *d;
+ struct dirent *de;
+ int r = 0;
+
+ if (!(d = opendir("/proc/self/fd")))
+ return -errno;
+
+ while ((de = readdir(d))) {
+ int fd = -1;
+
+ if (de->d_name[0] == '.')
+ continue;
+
+ if ((r = safe_atoi(de->d_name, &fd)) < 0)
+ goto finish;
+
+ if (fd < 3)
+ continue;
+
+ if (fd == dirfd(d))
+ continue;
+
+ if (except) {
+ bool found;
+ unsigned i;
+
+ found = false;
+ for (i = 0; i < n_except; i++)
+ if (except[i] == fd) {
+ found = true;
+ break;
+ }
+
+ if (found)
+ continue;
+ }
+
+ if ((r = close_nointr(fd)) < 0) {
+ /* Valgrind has its own FD and doesn't want to have it closed */
+ if (errno != EBADF)
+ goto finish;
+ }
+ }
+
+ r = 0;
+
+finish:
+ closedir(d);
+ return r;
+}
+
+bool chars_intersect(const char *a, const char *b) {
+ const char *p;
+
+ /* Returns true if any of the chars in a are in b. */
+ for (p = a; *p; p++)
+ if (strchr(b, *p))
+ return true;
+
+ return false;
+}
+
+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(ioprio_class, int);
+
+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 log_facility_table[LOG_NFACILITIES] = {
+ [LOG_FAC(LOG_KERN)] = "kern",
+ [LOG_FAC(LOG_USER)] = "user",
+ [LOG_FAC(LOG_MAIL)] = "mail",
+ [LOG_FAC(LOG_DAEMON)] = "daemon",
+ [LOG_FAC(LOG_AUTH)] = "auth",
+ [LOG_FAC(LOG_SYSLOG)] = "syslog",
+ [LOG_FAC(LOG_LPR)] = "lpr",
+ [LOG_FAC(LOG_NEWS)] = "news",
+ [LOG_FAC(LOG_UUCP)] = "uucp",
+ [LOG_FAC(LOG_CRON)] = "cron",
+ [LOG_FAC(LOG_AUTHPRIV)] = "authpriv",
+ [LOG_FAC(LOG_FTP)] = "ftp",
+ [LOG_FAC(LOG_LOCAL0)] = "local0",
+ [LOG_FAC(LOG_LOCAL1)] = "local1",
+ [LOG_FAC(LOG_LOCAL2)] = "local2",
+ [LOG_FAC(LOG_LOCAL3)] = "local3",
+ [LOG_FAC(LOG_LOCAL4)] = "local4",
+ [LOG_FAC(LOG_LOCAL5)] = "local5",
+ [LOG_FAC(LOG_LOCAL6)] = "local6",
+ [LOG_FAC(LOG_LOCAL7)] = "local7"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(log_facility, int);
+
+static const char *const log_level_table[] = {
+ [LOG_EMERG] = "emerg",
+ [LOG_ALERT] = "alert",
+ [LOG_CRIT] = "crit",
+ [LOG_ERR] = "err",
+ [LOG_WARNING] = "warning",
+ [LOG_NOTICE] = "notice",
+ [LOG_INFO] = "info",
+ [LOG_DEBUG] = "debug"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(log_level, 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(sched_policy, int);
+
+static const char* const rlimit_table[] = {
+ [RLIMIT_CPU] = "LimitCPU",
+ [RLIMIT_FSIZE] = "LimitFSIZE",
+ [RLIMIT_DATA] = "LimitDATA",
+ [RLIMIT_STACK] = "LimitSTACK",
+ [RLIMIT_CORE] = "LimitCORE",
+ [RLIMIT_RSS] = "LimitRSS",
+ [RLIMIT_NOFILE] = "LimitNOFILE",
+ [RLIMIT_AS] = "LimitAS",
+ [RLIMIT_NPROC] = "LimitNPROC",
+ [RLIMIT_MEMLOCK] = "LimitMEMLOCK",
+ [RLIMIT_LOCKS] = "LimitLOCKS",
+ [RLIMIT_SIGPENDING] = "LimitSIGPENDING",
+ [RLIMIT_MSGQUEUE] = "LimitMSGQUEUE",
+ [RLIMIT_NICE] = "LimitNICE",
+ [RLIMIT_RTPRIO] = "LimitRTPRIO",
+ [RLIMIT_RTTIME] = "LimitRTTIME"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(rlimit, int);