From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 21 Mar 2018 21:27:19 +0000 (+0100)
Subject: parse-util: introduce safe_atou16_full()
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=aa2274178348d0b08933595244ac6de0cf6e284c;p=elogind.git

parse-util: introduce safe_atou16_full()

safe_atou16_full() is like safe_atou16() but also takes a base
parameter. safe_atou16() is then implemented as inline function on top
of it, passing 0 as base. Similar safe_atoux16() is reworked as inline
function too, with 16 as base.
---

diff --git a/src/basic/parse-util.c b/src/basic/parse-util.c
index d5886b1f8..37eb61479 100644
--- a/src/basic/parse-util.c
+++ b/src/basic/parse-util.c
@@ -329,7 +329,8 @@ int parse_syscall_and_errno(const char *in, char **name, int *error) {
                 return -EINVAL;
 
         *error = e;
-        *name = TAKE_PTR(n);
+        *name = n;
+        n = NULL;
 
         return 0;
 }
@@ -491,17 +492,18 @@ int safe_atou8(const char *s, uint8_t *ret) {
         return 0;
 }
 
-int safe_atou16(const char *s, uint16_t *ret) {
+int safe_atou16_full(const char *s, unsigned base, uint16_t *ret) {
         char *x = NULL;
         unsigned long l;
 
         assert(s);
         assert(ret);
+        assert(base <= 16);
 
         s += strspn(s, WHITESPACE);
 
         errno = 0;
-        l = strtoul(s, &x, 0);
+        l = strtoul(s, &x, base);
         if (errno > 0)
                 return -errno;
         if (!x || x == s || *x != 0)
@@ -535,30 +537,6 @@ int safe_atoi16(const char *s, int16_t *ret) {
         return 0;
 }
 
-int safe_atoux16(const char *s, uint16_t *ret) {
-        char *x = NULL;
-        unsigned long l;
-
-        assert(s);
-        assert(ret);
-
-        s += strspn(s, WHITESPACE);
-
-        errno = 0;
-        l = strtoul(s, &x, 16);
-        if (errno > 0)
-                return -errno;
-        if (!x || x == s || *x != 0)
-                return -EINVAL;
-        if (s[0] == '-')
-                return -ERANGE;
-        if ((unsigned long) (uint16_t) l != l)
-                return -ERANGE;
-
-        *ret = (uint16_t) l;
-        return 0;
-}
-
 int safe_atod(const char *s, double *ret_d) {
         _cleanup_(freelocalep) locale_t loc = (locale_t) 0;
         char *x = NULL;
diff --git a/src/basic/parse-util.h b/src/basic/parse-util.h
index 50d380462..13b928c84 100644
--- a/src/basic/parse-util.h
+++ b/src/basic/parse-util.h
@@ -53,10 +53,17 @@ int safe_atolli(const char *s, long long int *ret_i);
 
 int safe_atou8(const char *s, uint8_t *ret);
 
-int safe_atou16(const char *s, uint16_t *ret);
-int safe_atoi16(const char *s, int16_t *ret);
+int safe_atou16_full(const char *s, unsigned base, uint16_t *ret);
+
+static inline int safe_atou16(const char *s, uint16_t *ret) {
+        return safe_atou16_full(s, 0, ret);
+}
 
-int safe_atoux16(const char *s, uint16_t *ret);
+static inline int safe_atoux16(const char *s, uint16_t *ret) {
+        return safe_atou16_full(s, 16, ret);
+}
+
+int safe_atoi16(const char *s, int16_t *ret);
 
 static inline int safe_atou32(const char *s, uint32_t *ret_u) {
         assert_cc(sizeof(uint32_t) == sizeof(unsigned));