summaryrefslogtreecommitdiff
path: root/src/libsystemd/sd-rtnl
diff options
context:
space:
mode:
authorTom Gundersen <teg@jklm.no>2014-12-02 00:59:02 +0100
committerTom Gundersen <teg@jklm.no>2014-12-02 00:59:02 +0100
commit73ae2b7dade339c8a258dcf4fa2b302e238117e1 (patch)
treeaff068c0ac39ff397bdc2999312bbc55e2328eda /src/libsystemd/sd-rtnl
parentdae4de9d42debf448bf667e0e4fd4606dfcfae0c (diff)
sd-rtnl: message - allow checking for attributes without reading out their contents
Diffstat (limited to 'src/libsystemd/sd-rtnl')
-rw-r--r--src/libsystemd/sd-rtnl/rtnl-message.c40
1 files changed, 32 insertions, 8 deletions
diff --git a/src/libsystemd/sd-rtnl/rtnl-message.c b/src/libsystemd/sd-rtnl/rtnl-message.c
index 22ee4c5042..e7238d530b 100644
--- a/src/libsystemd/sd-rtnl/rtnl-message.c
+++ b/src/libsystemd/sd-rtnl/rtnl-message.c
@@ -830,6 +830,8 @@ int sd_rtnl_message_read_string(sd_rtnl_message *m, unsigned short type, const c
int r;
void *attr_data;
+ assert_return(m, -EINVAL);
+
r = message_attribute_has_type(m, type, NLA_STRING);
if (r < 0)
return r;
@@ -840,7 +842,8 @@ int sd_rtnl_message_read_string(sd_rtnl_message *m, unsigned short type, const c
else if (strnlen(attr_data, r) >= (size_t) r)
return -EIO;
- *data = (const char *) attr_data;
+ if (data)
+ *data = (const char *) attr_data;
return 0;
}
@@ -849,6 +852,8 @@ int sd_rtnl_message_read_u8(sd_rtnl_message *m, unsigned short type, uint8_t *da
int r;
void *attr_data;
+ assert_return(m, -EINVAL);
+
r = message_attribute_has_type(m, type, NLA_U8);
if (r < 0)
return r;
@@ -859,7 +864,8 @@ int sd_rtnl_message_read_u8(sd_rtnl_message *m, unsigned short type, uint8_t *da
else if ((size_t) r < sizeof(uint8_t))
return -EIO;
- *data = *(uint8_t *) attr_data;
+ if (data)
+ *data = *(uint8_t *) attr_data;
return 0;
}
@@ -868,6 +874,8 @@ int sd_rtnl_message_read_u16(sd_rtnl_message *m, unsigned short type, uint16_t *
int r;
void *attr_data;
+ assert_return(m, -EINVAL);
+
r = message_attribute_has_type(m, type, NLA_U16);
if (r < 0)
return r;
@@ -878,7 +886,8 @@ int sd_rtnl_message_read_u16(sd_rtnl_message *m, unsigned short type, uint16_t *
else if ((size_t) r < sizeof(uint16_t))
return -EIO;
- *data = *(uint16_t *) attr_data;
+ if (data)
+ *data = *(uint16_t *) attr_data;
return 0;
}
@@ -887,6 +896,8 @@ int sd_rtnl_message_read_u32(sd_rtnl_message *m, unsigned short type, uint32_t *
int r;
void *attr_data;
+ assert_return(m, -EINVAL);
+
r = message_attribute_has_type(m, type, NLA_U32);
if (r < 0)
return r;
@@ -897,7 +908,8 @@ int sd_rtnl_message_read_u32(sd_rtnl_message *m, unsigned short type, uint32_t *
else if ((size_t)r < sizeof(uint32_t))
return -EIO;
- *data = *(uint32_t *) attr_data;
+ if (data)
+ *data = *(uint32_t *) attr_data;
return 0;
}
@@ -906,6 +918,8 @@ int sd_rtnl_message_read_ether_addr(sd_rtnl_message *m, unsigned short type, str
int r;
void *attr_data;
+ assert_return(m, -EINVAL);
+
r = message_attribute_has_type(m, type, NLA_ETHER_ADDR);
if (r < 0)
return r;
@@ -916,7 +930,8 @@ int sd_rtnl_message_read_ether_addr(sd_rtnl_message *m, unsigned short type, str
else if ((size_t)r < sizeof(struct ether_addr))
return -EIO;
- memcpy(data, attr_data, sizeof(struct ether_addr));
+ if (data)
+ memcpy(data, attr_data, sizeof(struct ether_addr));
return 0;
}
@@ -925,6 +940,8 @@ int sd_rtnl_message_read_cache_info(sd_rtnl_message *m, unsigned short type, str
int r;
void *attr_data;
+ assert_return(m, -EINVAL);
+
r = message_attribute_has_type(m, type, NLA_CACHE_INFO);
if (r < 0)
return r;
@@ -935,7 +952,8 @@ int sd_rtnl_message_read_cache_info(sd_rtnl_message *m, unsigned short type, str
else if ((size_t)r < sizeof(struct ifa_cacheinfo))
return -EIO;
- memcpy(info, attr_data, sizeof(struct ifa_cacheinfo));
+ if (info)
+ memcpy(info, attr_data, sizeof(struct ifa_cacheinfo));
return 0;
}
@@ -944,6 +962,8 @@ int sd_rtnl_message_read_in_addr(sd_rtnl_message *m, unsigned short type, struct
int r;
void *attr_data;
+ assert_return(m, -EINVAL);
+
r = message_attribute_has_type(m, type, NLA_IN_ADDR);
if (r < 0)
return r;
@@ -954,7 +974,8 @@ int sd_rtnl_message_read_in_addr(sd_rtnl_message *m, unsigned short type, struct
else if ((size_t)r < sizeof(struct in_addr))
return -EIO;
- memcpy(data, attr_data, sizeof(struct in_addr));
+ if (data)
+ memcpy(data, attr_data, sizeof(struct in_addr));
return 0;
}
@@ -963,6 +984,8 @@ int sd_rtnl_message_read_in6_addr(sd_rtnl_message *m, unsigned short type, struc
int r;
void *attr_data;
+ assert_return(m, -EINVAL);
+
r = message_attribute_has_type(m, type, NLA_IN_ADDR);
if (r < 0)
return r;
@@ -973,7 +996,8 @@ int sd_rtnl_message_read_in6_addr(sd_rtnl_message *m, unsigned short type, struc
else if ((size_t)r < sizeof(struct in6_addr))
return -EIO;
- memcpy(data, attr_data, sizeof(struct in6_addr));
+ if (data)
+ memcpy(data, attr_data, sizeof(struct in6_addr));
return 0;
}