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read_port() and write_port() must accept a NULL pointer as buffer if

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the bufferSize is zero.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11084 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2005-01-27 07:08:17 +00:00
parent 14771b1547
commit 0b111f38f9
1 changed files with 11 additions and 11 deletions
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22
src/kernel/core/port.c
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@ -1208,6 +1208,13 @@ _user_port_count(port_id port)
}
status_t
_user_set_port_owner(port_id port, team_id team)
{
return set_port_owner(port, team);
}
ssize_t
_user_read_port_etc(port_id port, int32 *userCode, void *userBuffer,
size_t bufferSize, uint32 flags, bigtime_t timeout)
@ -1215,9 +1222,9 @@ _user_read_port_etc(port_id port, int32 *userCode, void *userBuffer,
int32 messageCode;
ssize_t status;
if (userCode == NULL || userBuffer == NULL)
if (userCode == NULL || (userBuffer == NULL && bufferSize != 0))
return B_BAD_VALUE;
if (!IS_USER_ADDRESS(userCode) || !IS_USER_ADDRESS(userBuffer))
if (!IS_USER_ADDRESS(userCode) || (userBuffer != NULL && !IS_USER_ADDRESS(userBuffer)))
return B_BAD_ADDRESS;
status = read_port_etc(port, &messageCode, userBuffer, bufferSize,
@ -1230,20 +1237,13 @@ _user_read_port_etc(port_id port, int32 *userCode, void *userBuffer,
}
status_t
_user_set_port_owner(port_id port, team_id team)
{
return set_port_owner(port, team);
}
status_t
_user_write_port_etc(port_id port, int32 messageCode, const void *userBuffer,
size_t bufferSize, uint32 flags, bigtime_t timeout)
{
if (userBuffer == NULL)
if (userBuffer == NULL && bufferSize != 0)
return B_BAD_VALUE;
if (!IS_USER_ADDRESS(userBuffer))
if (userBuffer != NULL && !IS_USER_ADDRESS(userBuffer))
return B_BAD_ADDRESS;
return write_port_etc(port, messageCode, userBuffer, bufferSize,