#include <assert.h>
#include "path-util.h"
+#include "bus-label.h"
#include "util.h"
#include "unit-name.h"
+#include "def.h"
+#include "strv.h"
#define VALID_CHARS \
- "0123456789" \
- "abcdefghijklmnopqrstuvwxyz" \
- "ABCDEFGHIJKLMNOPQRSTUVWXYZ" \
+ DIGITS LETTERS \
":-_.\\"
static const char* const unit_type_table[_UNIT_TYPE_MAX] = {
[UNIT_SERVICE] = "service",
[UNIT_SOCKET] = "socket",
+ [UNIT_BUSNAME] = "busname",
[UNIT_TARGET] = "target",
+ [UNIT_SNAPSHOT] = "snapshot",
[UNIT_DEVICE] = "device",
[UNIT_MOUNT] = "mount",
[UNIT_AUTOMOUNT] = "automount",
- [UNIT_SNAPSHOT] = "snapshot",
- [UNIT_TIMER] = "timer",
[UNIT_SWAP] = "swap",
+ [UNIT_TIMER] = "timer",
[UNIT_PATH] = "path",
- [UNIT_SLICE] = "slice"
+ [UNIT_SLICE] = "slice",
+ [UNIT_SCOPE] = "scope"
};
DEFINE_STRING_TABLE_LOOKUP(unit_type, UnitType);
DEFINE_STRING_TABLE_LOOKUP(unit_load_state, UnitLoadState);
-bool unit_name_is_valid(const char *n, bool template_ok) {
+bool unit_name_is_valid(const char *n, enum template_valid template_ok) {
const char *e, *i, *at;
/* Valid formats:
* string.suffix
*/
- assert(n);
+ assert(IN_SET(template_ok, TEMPLATE_VALID, TEMPLATE_INVALID));
+
+ if (isempty(n))
+ return false;
if (strlen(n) >= UNIT_NAME_MAX)
return false;
if (at == n)
return false;
- if (!template_ok && at+1 == e)
+ if (!template_ok == TEMPLATE_VALID && at+1 == e)
return false;
}
}
bool unit_instance_is_valid(const char *i) {
- assert(i);
/* The max length depends on the length of the string, so we
* don't really check this here. */
- if (i[0] == 0)
+ if (isempty(i))
return false;
/* We allow additional @ in the instance string, we do not
* allow them in the prefix! */
- for (; *i; i++)
- if (!strchr("@" VALID_CHARS, *i))
- return false;
-
- return true;
+ return in_charset(i, "@" VALID_CHARS);
}
bool unit_prefix_is_valid(const char *p) {
/* We don't allow additional @ in the instance string */
- if (p[0] == 0)
+ if (isempty(p))
return false;
- for (; *p; p++)
- if (!strchr(VALID_CHARS, *p))
- return false;
-
- return true;
+ return in_charset(p, VALID_CHARS);
}
int unit_name_to_instance(const char *n, char **instance) {
return 0;
}
- assert_se(d = strrchr(n, '.'));
- assert(p < d);
+ d = strrchr(n, '.');
+ if (!d)
+ return -EINVAL;
+ if (d < p)
+ return -EINVAL;
i = strndup(p+1, d-p-1);
if (!i)
return -ENOMEM;
*instance = i;
- return 0;
+ return 1;
}
char *unit_name_to_prefix_and_instance(const char *n) {
assert(n);
assert_se(d = strrchr(n, '.'));
-
return strndup(n, d - n);
}
char *unit_name_to_prefix(const char *n) {
const char *p;
+ assert(n);
+
p = strchr(n, '@');
if (p)
return strndup(n, p - n);
size_t a, b;
assert(n);
- assert(unit_name_is_valid(n, true));
assert(suffix);
assert(suffix[0] == '.');
if (!r)
return NULL;
- memcpy(r, n, a);
- memcpy(r+a, suffix, b+1);
-
+ strcpy(mempcpy(r, n, a), suffix);
return r;
}
char *unit_name_build(const char *prefix, const char *instance, const char *suffix) {
assert(prefix);
- assert(unit_prefix_is_valid(prefix));
- assert(!instance || unit_instance_is_valid(instance));
assert(suffix);
if (!instance)
}
static char *do_escape_char(char c, char *t) {
+ assert(t);
+
*(t++) = '\\';
*(t++) = 'x';
*(t++) = hexchar(c >> 4);
*(t++) = hexchar(c);
+
return t;
}
return t;
}
+static char *do_escape_mangle(const char *f, enum unit_name_mangle allow_globs, char *t) {
+ const char *valid_chars;
+
+ assert(f);
+ assert(IN_SET(allow_globs, MANGLE_GLOB, MANGLE_NOGLOB));
+ assert(t);
+
+ /* We'll only escape the obvious characters here, to play
+ * safe. */
+
+ valid_chars = allow_globs == MANGLE_GLOB ? "@" VALID_CHARS "[]!-*?" : "@" VALID_CHARS;
+
+ for (; *f; f++) {
+ if (*f == '/')
+ *(t++) = '-';
+ else if (!strchr(valid_chars, *f))
+ t = do_escape_char(*f, t);
+ else
+ *(t++) = *f;
+ }
+
+ return t;
+}
+
char *unit_name_escape(const char *f) {
char *r, *t;
+ assert(f);
+
r = new(char, strlen(f)*4+1);
if (!r)
return NULL;
}
char *unit_name_path_escape(const char *f) {
- char *p, *e;
+ _cleanup_free_ char *p = NULL;
assert(f);
path_kill_slashes(p);
- if (streq(p, "/")) {
- free(p);
+ if (STR_IN_SET(p, "/", ""))
return strdup("-");
- }
- e = unit_name_escape(p[0] == '/' ? p + 1 : p);
- free(p);
-
- return e;
+ return unit_name_escape(p[0] == '/' ? p + 1 : p);
}
char *unit_name_path_unescape(const char *f) {
- char *e;
+ char *e, *w;
assert(f);
return NULL;
if (e[0] != '/') {
- char *w;
-
w = strappend("/", e);
free(e);
-
return w;
}
}
bool unit_name_is_template(const char *n) {
- const char *p;
+ const char *p, *e;
assert(n);
if (!p)
return false;
- return p[1] == '.';
+ e = strrchr(p+1, '.');
+ if (!e)
+ return false;
+
+ return e == p + 1;
}
bool unit_name_is_instance(const char *n) {
- const char *p;
+ const char *p, *e;
assert(n);
if (!p)
return false;
- return p[1] != '.';
+ e = strrchr(p+1, '.');
+ if (!e)
+ return false;
+
+ return e > p + 1;
}
char *unit_name_replace_instance(const char *f, const char *i) {
const char *p, *e;
- char *r, *k;
+ char *r;
size_t a, b;
assert(f);
+ assert(i);
p = strchr(f, '@');
if (!p)
e = strrchr(f, '.');
if (!e)
- assert_se(e = strchr(f, 0));
+ e = strchr(f, 0);
a = p - f;
b = strlen(i);
if (!r)
return NULL;
- k = mempcpy(r, f, a + 1);
- k = mempcpy(k, i, b);
- strcpy(k, e);
-
+ strcpy(mempcpy(mempcpy(r, f, a + 1), i, b), e);
return r;
}
char *r;
size_t a;
+ assert(f);
+
p = strchr(f, '@');
if (!p)
return strdup(f);
- assert_se(e = strrchr(f, '.'));
- a = p - f + 1;
+ e = strrchr(f, '.');
+ if (!e)
+ e = strchr(f, 0);
+
+ a = p - f;
- r = new(char, a + strlen(e) + 1);
+ r = new(char, a + 1 + strlen(e) + 1);
if (!r)
return NULL;
- strcpy(mempcpy(r, f, a), e);
+ strcpy(mempcpy(r, f, a + 1), e);
return r;
}
char *unit_name_from_path(const char *path, const char *suffix) {
- char *p, *r;
+ _cleanup_free_ char *p = NULL;
assert(path);
assert(suffix);
if (!p)
return NULL;
- r = strappend(p, suffix);
- free(p);
-
- return r;
+ return strappend(p, suffix);
}
char *unit_name_from_path_instance(const char *prefix, const char *path, const char *suffix) {
- char *p, *r;
+ _cleanup_free_ char *p = NULL;
assert(prefix);
assert(path);
if (!p)
return NULL;
- r = strjoin(prefix, "@", p, suffix, NULL);
- free(p);
-
- return r;
+ return strjoin(prefix, "@", p, suffix, NULL);
}
char *unit_name_to_path(const char *name) {
- char *w, *e;
+ _cleanup_free_ char *w = NULL;
assert(name);
if (!w)
return NULL;
- e = unit_name_path_unescape(w);
- free(w);
-
- return e;
+ return unit_name_path_unescape(w);
}
char *unit_dbus_path_from_name(const char *name) {
assert(name);
- e = bus_path_escape(name);
+ e = bus_label_escape(name);
if (!e)
return NULL;
return strappend("/org/freedesktop/systemd1/unit/", e);
}
-char *unit_name_mangle(const char *name) {
+int unit_name_from_dbus_path(const char *path, char **name) {
+ const char *e;
+ char *n;
+
+ e = startswith(path, "/org/freedesktop/systemd1/unit/");
+ if (!e)
+ return -EINVAL;
+
+ n = bus_label_unescape(e);
+ if (!n)
+ return -ENOMEM;
+
+ *name = n;
+ return 0;
+}
+
+/**
+ * Try to turn a string that might not be a unit name into a
+ * sensible unit name.
+ */
+char *unit_name_mangle(const char *name, enum unit_name_mangle allow_globs) {
char *r, *t;
- const char *f;
assert(name);
- /* Try to turn a string that might not be a unit name into a
- * sensible unit name. */
-
if (is_device_path(name))
return unit_name_from_path(name, ".device");
if (path_is_absolute(name))
return unit_name_from_path(name, ".mount");
- /* We'll only escape the obvious characters here, to play
- * safe. */
-
- r = new(char, strlen(name) * 4 + 1 + sizeof(".service")-1);
+ r = new(char, strlen(name) * 4 + strlen(".service") + 1);
if (!r)
return NULL;
- for (f = name, t = r; *f; f++) {
- if (*f == '/')
- *(t++) = '-';
- else if (!strchr("@" VALID_CHARS, *f))
- t = do_escape_char(*f, t);
- else
- *(t++) = *f;
- }
+ t = do_escape_mangle(name, allow_globs, r);
if (unit_name_to_type(name) < 0)
strcpy(t, ".service");
return r;
}
-char *unit_name_mangle_with_suffix(const char *name, const char *suffix) {
+/**
+ * Similar to unit_name_mangle(), but is called when we know
+ * that this is about a specific unit type.
+ */
+char *unit_name_mangle_with_suffix(const char *name, enum unit_name_mangle allow_globs, const char *suffix) {
char *r, *t;
- const char *f;
assert(name);
assert(suffix);
assert(suffix[0] == '.');
- /* Similar to unit_name_mangle(), but is called when we know
- * that this is about snapshot units. */
-
r = new(char, strlen(name) * 4 + strlen(suffix) + 1);
if (!r)
return NULL;
- for (f = name, t = r; *f; f++) {
- if (*f == '/')
- *(t++) = '-';
- else if (!strchr(VALID_CHARS, *f))
- t = do_escape_char(*f, t);
- else
- *(t++) = *f;
- }
+ t = do_escape_mangle(name, allow_globs, r);
if (!endswith(name, suffix))
strcpy(t, suffix);
return unit_type_from_string(e + 1);
}
+
+int build_subslice(const char *slice, const char*name, char **subslice) {
+ char *ret;
+
+ assert(slice);
+ assert(name);
+ assert(subslice);
+
+ if (streq(slice, "-.slice"))
+ ret = strappend(name, ".slice");
+ else {
+ char *e;
+
+ e = endswith(slice, ".slice");
+ if (!e)
+ return -EINVAL;
+
+ ret = new(char, (e - slice) + 1 + strlen(name) + 6 + 1);
+ if (!ret)
+ return -ENOMEM;
+
+ stpcpy(stpcpy(stpcpy(mempcpy(ret, slice, e - slice), "-"), name), ".slice");
+ }
+
+ *subslice = ret;
+ return 0;
+}
+
+static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = {
+ [UNIT_REQUIRES] = "Requires",
+ [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable",
+ [UNIT_REQUISITE] = "Requisite",
+ [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable",
+ [UNIT_WANTS] = "Wants",
+ [UNIT_BINDS_TO] = "BindsTo",
+ [UNIT_PART_OF] = "PartOf",
+ [UNIT_REQUIRED_BY] = "RequiredBy",
+ [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable",
+ [UNIT_WANTED_BY] = "WantedBy",
+ [UNIT_BOUND_BY] = "BoundBy",
+ [UNIT_CONSISTS_OF] = "ConsistsOf",
+ [UNIT_CONFLICTS] = "Conflicts",
+ [UNIT_CONFLICTED_BY] = "ConflictedBy",
+ [UNIT_BEFORE] = "Before",
+ [UNIT_AFTER] = "After",
+ [UNIT_ON_FAILURE] = "OnFailure",
+ [UNIT_TRIGGERS] = "Triggers",
+ [UNIT_TRIGGERED_BY] = "TriggeredBy",
+ [UNIT_PROPAGATES_RELOAD_TO] = "PropagatesReloadTo",
+ [UNIT_RELOAD_PROPAGATED_FROM] = "ReloadPropagatedFrom",
+ [UNIT_JOINS_NAMESPACE_OF] = "JoinsNamespaceOf",
+ [UNIT_REFERENCES] = "References",
+ [UNIT_REFERENCED_BY] = "ReferencedBy",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency);
~ianmdlvl / elogind.git / blobdiff