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linux-user: add SO_LINGER to {g,s}etsockopt

Browse source 
Original implementation for setsockopt by Chen Gang[1]; all bugs mine,
including removing assignment for optname which hopefully makes the
logic easier to follow and moving some variables to make the code
more selfcontained.

[1] http://patchwork.ozlabs.org/patch/565659/

Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Co-Authored-By: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180824085601.6259-1-carenas@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Carlo Marcelo Arenas Belón 2018-08-24 01:56:01 -07:00 committed by Laurent Vivier
parent f7e6a401fe
commit 83eb6e5090
2 changed files with 56 additions and 1 deletions
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52
linux-user/syscall.c
View file

@ -2032,6 +2032,24 @@ set_timeout:
unlock_user (dev_ifname, optval_addr, 0);
return ret;
}
case TARGET_SO_LINGER:
{
struct linger lg;
struct target_linger *tlg;
if (optlen != sizeof(struct target_linger)) {
return -TARGET_EINVAL;
}
if (!lock_user_struct(VERIFY_READ, tlg, optval_addr, 1)) {
return -TARGET_EFAULT;
}
__get_user(lg.l_onoff, &tlg->l_onoff);
__get_user(lg.l_linger, &tlg->l_linger);
ret = get_errno(setsockopt(sockfd, SOL_SOCKET, SO_LINGER,
&lg, sizeof(lg)));
unlock_user_struct(tlg, optval_addr, 0);
return ret;
}
/* Options with 'int' argument. */
case TARGET_SO_DEBUG:
optname = SO_DEBUG;
@ -2123,7 +2141,6 @@ static abi_long do_getsockopt(int sockfd, int level, int optname,
level = SOL_SOCKET;
switch (optname) {
/* These don't just return a single integer */
case TARGET_SO_LINGER:
case TARGET_SO_RCVTIMEO:
case TARGET_SO_SNDTIMEO:
case TARGET_SO_PEERNAME:
@ -2161,6 +2178,39 @@ static abi_long do_getsockopt(int sockfd, int level, int optname,
}
break;
}
case TARGET_SO_LINGER:
{
struct linger lg;
socklen_t lglen;
struct target_linger *tlg;
if (get_user_u32(len, optlen)) {
return -TARGET_EFAULT;
}
if (len < 0) {
return -TARGET_EINVAL;
}
lglen = sizeof(lg);
ret = get_errno(getsockopt(sockfd, level, SO_LINGER,
&lg, &lglen));
if (ret < 0) {
return ret;
}
if (len > lglen) {
len = lglen;
}
if (!lock_user_struct(VERIFY_WRITE, tlg, optval_addr, 0)) {
return -TARGET_EFAULT;
}
__put_user(lg.l_onoff, &tlg->l_onoff);
__put_user(lg.l_linger, &tlg->l_linger);
unlock_user_struct(tlg, optval_addr, 1);
if (put_user_u32(len, optlen)) {
return -TARGET_EFAULT;
}
break;
}
/* Options with 'int' argument. */
case TARGET_SO_DEBUG:
optname = SO_DEBUG;

5
linux-user/syscall_defs.h
View file

@ -203,6 +203,11 @@ struct target_ip_mreq_source {
uint32_t imr_sourceaddr;
};
struct target_linger {
abi_int l_onoff; /* Linger active */
abi_int l_linger; /* How long to linger for */
};
struct target_timeval {
abi_long tv_sec;
abi_long tv_usec;