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systemd/SOURCES/0459-parse-util-sometimes-i...

150 lines
3.8 KiB

From 2fd9a21a8b6a93c4fb2747839766adca15faa008 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 14 Nov 2019 14:49:40 +0100
Subject: [PATCH] parse-util: sometimes it is useful to check if a string is a
valid integer, but not actually parse it
(cherry picked from commit 22810041c2200fe72b0e0c985d0e404f8b80f9e2)
Related: #1848373
---
src/basic/parse-util.c | 34 ++++++++++++++++++++--------------
1 file changed, 20 insertions(+), 14 deletions(-)
diff --git a/src/basic/parse-util.c b/src/basic/parse-util.c
index 6becf85878..056e56765e 100644
--- a/src/basic/parse-util.c
+++ b/src/basic/parse-util.c
@@ -383,7 +383,6 @@ int safe_atou_full(const char *s, unsigned base, unsigned *ret_u) {
unsigned long l;
assert(s);
- assert(ret_u);
assert(base <= 16);
/* strtoul() is happy to parse negative values, and silently
@@ -407,7 +406,9 @@ int safe_atou_full(const char *s, unsigned base, unsigned *ret_u) {
if ((unsigned long) (unsigned) l != l)
return -ERANGE;
- *ret_u = (unsigned) l;
+ if (ret_u)
+ *ret_u = (unsigned) l;
+
return 0;
}
@@ -416,7 +417,6 @@ int safe_atoi(const char *s, int *ret_i) {
long l;
assert(s);
- assert(ret_i);
errno = 0;
l = strtol(s, &x, 0);
@@ -427,7 +427,9 @@ int safe_atoi(const char *s, int *ret_i) {
if ((long) (int) l != l)
return -ERANGE;
- *ret_i = (int) l;
+ if (ret_i)
+ *ret_i = (int) l;
+
return 0;
}
@@ -436,7 +438,6 @@ int safe_atollu(const char *s, long long unsigned *ret_llu) {
unsigned long long l;
assert(s);
- assert(ret_llu);
s += strspn(s, WHITESPACE);
@@ -449,7 +450,9 @@ int safe_atollu(const char *s, long long unsigned *ret_llu) {
if (*s == '-')
return -ERANGE;
- *ret_llu = l;
+ if (ret_llu)
+ *ret_llu = l;
+
return 0;
}
@@ -458,7 +461,6 @@ int safe_atolli(const char *s, long long int *ret_lli) {
long long l;
assert(s);
- assert(ret_lli);
errno = 0;
l = strtoll(s, &x, 0);
@@ -467,7 +469,9 @@ int safe_atolli(const char *s, long long int *ret_lli) {
if (!x || x == s || *x != 0)
return -EINVAL;
- *ret_lli = l;
+ if (ret_lli)
+ *ret_lli = l;
+
return 0;
}
@@ -476,7 +480,6 @@ int safe_atou8(const char *s, uint8_t *ret) {
unsigned long l;
assert(s);
- assert(ret);
s += strspn(s, WHITESPACE);
@@ -491,7 +494,8 @@ int safe_atou8(const char *s, uint8_t *ret) {
if ((unsigned long) (uint8_t) l != l)
return -ERANGE;
- *ret = (uint8_t) l;
+ if (ret)
+ *ret = (uint8_t) l;
return 0;
}
@@ -525,7 +529,6 @@ int safe_atoi16(const char *s, int16_t *ret) {
long l;
assert(s);
- assert(ret);
errno = 0;
l = strtol(s, &x, 0);
@@ -536,7 +539,9 @@ int safe_atoi16(const char *s, int16_t *ret) {
if ((long) (int16_t) l != l)
return -ERANGE;
- *ret = (int16_t) l;
+ if (ret)
+ *ret = (int16_t) l;
+
return 0;
}
@@ -546,7 +551,6 @@ int safe_atod(const char *s, double *ret_d) {
double d = 0;
assert(s);
- assert(ret_d);
loc = newlocale(LC_NUMERIC_MASK, "C", (locale_t) 0);
if (loc == (locale_t) 0)
@@ -559,7 +563,9 @@ int safe_atod(const char *s, double *ret_d) {
if (!x || x == s || *x != 0)
return -EINVAL;
- *ret_d = (double) d;
+ if (ret_d)
+ *ret_d = (double) d;
+
return 0;
}