aboutsummaryrefslogtreecommitdiff
path: root/net/compat.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/compat.c')
-rw-r--r--net/compat.c597
1 files changed, 399 insertions, 198 deletions
diff --git a/net/compat.c b/net/compat.c
index d5d69fa15d0..bc8aeefddf3 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -1,4 +1,4 @@
-/*
+/*
* 32bit Socket syscall emulation. Based on arch/sparc64/kernel/sys_sparc32.c.
*
* Copyright (C) 2000 VA Linux Co
@@ -8,12 +8,12 @@
* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 2000 Hewlett-Packard Co.
* Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
- * Copyright (C) 2000,2001 Andi Kleen, SuSE Labs
+ * Copyright (C) 2000,2001 Andi Kleen, SuSE Labs
*/
#include <linux/kernel.h>
+#include <linux/gfp.h>
#include <linux/fs.h>
-#include <linux/sched.h>
#include <linux/types.h>
#include <linux/file.h>
#include <linux/icmpv6.h>
@@ -21,11 +21,13 @@
#include <linux/syscalls.h>
#include <linux/filter.h>
#include <linux/compat.h>
-#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/security.h>
+#include <linux/export.h>
#include <net/scm.h>
#include <net/sock.h>
+#include <net/ip.h>
+#include <net/ipv6.h>
#include <asm/uaccess.h>
#include <net/compat.h>
@@ -35,15 +37,17 @@ static inline int iov_from_user_compat_to_kern(struct iovec *kiov,
{
int tot_len = 0;
- while(niov > 0) {
+ while (niov > 0) {
compat_uptr_t buf;
compat_size_t len;
- if(get_user(len, &uiov32->iov_len) ||
- get_user(buf, &uiov32->iov_base)) {
- tot_len = -EFAULT;
- break;
- }
+ if (get_user(len, &uiov32->iov_len) ||
+ get_user(buf, &uiov32->iov_base))
+ return -EFAULT;
+
+ if (len > INT_MAX - tot_len)
+ len = INT_MAX - tot_len;
+
tot_len += len;
kiov->iov_base = compat_ptr(buf);
kiov->iov_len = (__kernel_size_t) len;
@@ -67,6 +71,8 @@ int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg)
__get_user(kmsg->msg_controllen, &umsg->msg_controllen) ||
__get_user(kmsg->msg_flags, &umsg->msg_flags))
return -EFAULT;
+ if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))
+ kmsg->msg_namelen = sizeof(struct sockaddr_storage);
kmsg->msg_name = compat_ptr(tmp1);
kmsg->msg_iov = compat_ptr(tmp2);
kmsg->msg_control = compat_ptr(tmp3);
@@ -75,26 +81,28 @@ int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg)
/* I've named the args so it is easy to tell whose space the pointers are in. */
int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
- char *kern_address, int mode)
+ struct sockaddr_storage *kern_address, int mode)
{
int tot_len;
- if(kern_msg->msg_namelen) {
- if(mode==VERIFY_READ) {
+ if (kern_msg->msg_name && kern_msg->msg_namelen) {
+ if (mode == VERIFY_READ) {
int err = move_addr_to_kernel(kern_msg->msg_name,
kern_msg->msg_namelen,
kern_address);
- if(err < 0)
+ if (err < 0)
return err;
}
kern_msg->msg_name = kern_address;
- } else
+ } else {
kern_msg->msg_name = NULL;
+ kern_msg->msg_namelen = 0;
+ }
tot_len = iov_from_user_compat_to_kern(kern_iov,
(struct compat_iovec __user *)kern_msg->msg_iov,
kern_msg->msg_iovlen);
- if(tot_len >= 0)
+ if (tot_len >= 0)
kern_msg->msg_iov = kern_iov;
return tot_len;
@@ -147,8 +155,8 @@ int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk,
kcmlen = 0;
kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf;
ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
- while(ucmsg != NULL) {
- if(get_user(ucmlen, &ucmsg->cmsg_len))
+ while (ucmsg != NULL) {
+ if (get_user(ucmlen, &ucmsg->cmsg_len))
return -EFAULT;
/* Catch bogons. */
@@ -161,7 +169,7 @@ int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk,
kcmlen += tmp;
ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen);
}
- if(kcmlen == 0)
+ if (kcmlen == 0)
return -EINVAL;
/* The kcmlen holds the 64-bit version of the control length.
@@ -177,7 +185,7 @@ int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk,
/* Now copy them over neatly. */
memset(kcmsg, 0, kcmlen);
ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg);
- while(ucmsg != NULL) {
+ while (ucmsg != NULL) {
if (__get_user(ucmlen, &ucmsg->cmsg_len))
goto Efault;
if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg))
@@ -215,26 +223,41 @@ Efault:
int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
{
- struct compat_timeval ctv;
struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
struct compat_cmsghdr cmhdr;
+ struct compat_timeval ctv;
+ struct compat_timespec cts[3];
int cmlen;
- if(cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
+ if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) {
kmsg->msg_flags |= MSG_CTRUNC;
return 0; /* XXX: return error? check spec. */
}
- if (level == SOL_SOCKET && type == SO_TIMESTAMP) {
- struct timeval *tv = (struct timeval *)data;
- ctv.tv_sec = tv->tv_sec;
- ctv.tv_usec = tv->tv_usec;
- data = &ctv;
- len = sizeof(struct compat_timeval);
- }
-
+ if (!COMPAT_USE_64BIT_TIME) {
+ if (level == SOL_SOCKET && type == SCM_TIMESTAMP) {
+ struct timeval *tv = (struct timeval *)data;
+ ctv.tv_sec = tv->tv_sec;
+ ctv.tv_usec = tv->tv_usec;
+ data = &ctv;
+ len = sizeof(ctv);
+ }
+ if (level == SOL_SOCKET &&
+ (type == SCM_TIMESTAMPNS || type == SCM_TIMESTAMPING)) {
+ int count = type == SCM_TIMESTAMPNS ? 1 : 3;
+ int i;
+ struct timespec *ts = (struct timespec *)data;
+ for (i = 0; i < count; i++) {
+ cts[i].tv_sec = ts[i].tv_sec;
+ cts[i].tv_nsec = ts[i].tv_nsec;
+ }
+ data = &cts;
+ len = sizeof(cts[0]) * count;
+ }
+ }
+
cmlen = CMSG_COMPAT_LEN(len);
- if(kmsg->msg_controllen < cmlen) {
+ if (kmsg->msg_controllen < cmlen) {
kmsg->msg_flags |= MSG_CTRUNC;
cmlen = kmsg->msg_controllen;
}
@@ -242,11 +265,13 @@ int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *dat
cmhdr.cmsg_type = type;
cmhdr.cmsg_len = cmlen;
- if(copy_to_user(cm, &cmhdr, sizeof cmhdr))
+ if (copy_to_user(cm, &cmhdr, sizeof cmhdr))
return -EFAULT;
- if(copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr)))
+ if (copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr)))
return -EFAULT;
cmlen = CMSG_COMPAT_SPACE(len);
+ if (kmsg->msg_controllen < cmlen)
+ cmlen = kmsg->msg_controllen;
kmsg->msg_control += cmlen;
kmsg->msg_controllen -= cmlen;
return 0;
@@ -269,7 +294,8 @@ void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
err = security_file_receive(fp[i]);
if (err)
break;
- err = get_unused_fd();
+ err = get_unused_fd_flags(MSG_CMSG_CLOEXEC & kmsg->msg_flags
+ ? O_CLOEXEC : 0);
if (err < 0)
break;
new_fd = err;
@@ -279,14 +305,12 @@ void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
break;
}
/* Bump the usage count and install the file. */
- get_file(fp[i]);
- fd_install(new_fd, fp[i]);
+ fd_install(new_fd, get_file(fp[i]));
}
if (i > 0) {
int cmlen = CMSG_COMPAT_LEN(i * sizeof(int));
- if (!err)
- err = put_user(SOL_SOCKET, &cm->cmsg_level);
+ err = put_user(SOL_SOCKET, &cm->cmsg_level);
if (!err)
err = put_user(SCM_RIGHTS, &cm->cmsg_type);
if (!err)
@@ -307,120 +331,11 @@ void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
__scm_destroy(scm);
}
-/*
- * For now, we assume that the compatibility and native version
- * of struct ipt_entry are the same - sfr. FIXME
- */
-struct compat_ipt_replace {
- char name[IPT_TABLE_MAXNAMELEN];
- u32 valid_hooks;
- u32 num_entries;
- u32 size;
- u32 hook_entry[NF_IP_NUMHOOKS];
- u32 underflow[NF_IP_NUMHOOKS];
- u32 num_counters;
- compat_uptr_t counters; /* struct ipt_counters * */
- struct ipt_entry entries[0];
-};
-
-static int do_netfilter_replace(int fd, int level, int optname,
- char __user *optval, int optlen)
-{
- struct compat_ipt_replace __user *urepl;
- struct ipt_replace __user *repl_nat;
- char name[IPT_TABLE_MAXNAMELEN];
- u32 origsize, tmp32, num_counters;
- unsigned int repl_nat_size;
- int ret;
- int i;
- compat_uptr_t ucntrs;
-
- urepl = (struct compat_ipt_replace __user *)optval;
- if (get_user(origsize, &urepl->size))
- return -EFAULT;
-
- /* Hack: Causes ipchains to give correct error msg --RR */
- if (optlen != sizeof(*urepl) + origsize)
- return -ENOPROTOOPT;
-
- /* XXX Assumes that size of ipt_entry is the same both in
- * native and compat environments.
- */
- repl_nat_size = sizeof(*repl_nat) + origsize;
- repl_nat = compat_alloc_user_space(repl_nat_size);
-
- ret = -EFAULT;
- if (put_user(origsize, &repl_nat->size))
- goto out;
-
- if (!access_ok(VERIFY_READ, urepl, optlen) ||
- !access_ok(VERIFY_WRITE, repl_nat, optlen))
- goto out;
-
- if (__copy_from_user(name, urepl->name, sizeof(urepl->name)) ||
- __copy_to_user(repl_nat->name, name, sizeof(repl_nat->name)))
- goto out;
-
- if (__get_user(tmp32, &urepl->valid_hooks) ||
- __put_user(tmp32, &repl_nat->valid_hooks))
- goto out;
-
- if (__get_user(tmp32, &urepl->num_entries) ||
- __put_user(tmp32, &repl_nat->num_entries))
- goto out;
-
- if (__get_user(num_counters, &urepl->num_counters) ||
- __put_user(num_counters, &repl_nat->num_counters))
- goto out;
-
- if (__get_user(ucntrs, &urepl->counters) ||
- __put_user(compat_ptr(ucntrs), &repl_nat->counters))
- goto out;
-
- if (__copy_in_user(&repl_nat->entries[0],
- &urepl->entries[0],
- origsize))
- goto out;
-
- for (i = 0; i < NF_IP_NUMHOOKS; i++) {
- if (__get_user(tmp32, &urepl->hook_entry[i]) ||
- __put_user(tmp32, &repl_nat->hook_entry[i]) ||
- __get_user(tmp32, &urepl->underflow[i]) ||
- __put_user(tmp32, &repl_nat->underflow[i]))
- goto out;
- }
-
- /*
- * Since struct ipt_counters just contains two u_int64_t members
- * we can just do the access_ok check here and pass the (converted)
- * pointer into the standard syscall. We hope that the pointer is
- * not misaligned ...
- */
- if (!access_ok(VERIFY_WRITE, compat_ptr(ucntrs),
- num_counters * sizeof(struct ipt_counters)))
- goto out;
-
-
- ret = sys_setsockopt(fd, level, optname,
- (char __user *)repl_nat, repl_nat_size);
-
-out:
- return ret;
-}
-
-/*
- * A struct sock_filter is architecture independent.
- */
-struct compat_sock_fprog {
- u16 len;
- compat_uptr_t filter; /* struct sock_filter * */
-};
-
static int do_set_attach_filter(struct socket *sock, int level, int optname,
- char __user *optval, int optlen)
+ char __user *optval, unsigned int optlen)
{
struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval;
- struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog));
+ struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog));
compat_uptr_t ptr;
u16 len;
@@ -437,9 +352,9 @@ static int do_set_attach_filter(struct socket *sock, int level, int optname,
}
static int do_set_sock_timeout(struct socket *sock, int level,
- int optname, char __user *optval, int optlen)
+ int optname, char __user *optval, unsigned int optlen)
{
- struct compat_timeval __user *up = (struct compat_timeval __user *) optval;
+ struct compat_timeval __user *up = (struct compat_timeval __user *)optval;
struct timeval ktime;
mm_segment_t old_fs;
int err;
@@ -452,14 +367,14 @@ static int do_set_sock_timeout(struct socket *sock, int level,
return -EFAULT;
old_fs = get_fs();
set_fs(KERNEL_DS);
- err = sock_setsockopt(sock, level, optname, (char *) &ktime, sizeof(ktime));
+ err = sock_setsockopt(sock, level, optname, (char *)&ktime, sizeof(ktime));
set_fs(old_fs);
return err;
}
static int compat_sock_setsockopt(struct socket *sock, int level, int optname,
- char __user *optval, int optlen)
+ char __user *optval, unsigned int optlen)
{
if (optname == SO_ATTACH_FILTER)
return do_set_attach_filter(sock, level, optname,
@@ -470,22 +385,14 @@ static int compat_sock_setsockopt(struct socket *sock, int level, int optname,
return sock_setsockopt(sock, level, optname, optval, optlen);
}
-asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
- char __user *optval, int optlen)
+COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname,
+ char __user *, optval, unsigned int, optlen)
{
int err;
- struct socket *sock;
-
- if (level == SOL_IPV6 && optname == IPT_SO_SET_REPLACE)
- return do_netfilter_replace(fd, level, optname,
- optval, optlen);
+ struct socket *sock = sockfd_lookup(fd, &err);
- if (optlen < 0)
- return -EINVAL;
-
- if ((sock = sockfd_lookup(fd, &err))!=NULL)
- {
- err = security_socket_setsockopt(sock,level,optname);
+ if (sock) {
+ err = security_socket_setsockopt(sock, level, optname);
if (err) {
sockfd_put(sock);
return err;
@@ -544,33 +451,68 @@ static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
{
- struct compat_timeval __user *ctv =
- (struct compat_timeval __user*) userstamp;
- int err = -ENOENT;
+ struct compat_timeval __user *ctv;
+ int err;
+ struct timeval tv;
+
+ if (COMPAT_USE_64BIT_TIME)
+ return sock_get_timestamp(sk, userstamp);
+ ctv = (struct compat_timeval __user *) userstamp;
+ err = -ENOENT;
if (!sock_flag(sk, SOCK_TIMESTAMP))
- sock_enable_timestamp(sk);
- if (sk->sk_stamp.tv_sec == -1)
+ sock_enable_timestamp(sk, SOCK_TIMESTAMP);
+ tv = ktime_to_timeval(sk->sk_stamp);
+ if (tv.tv_sec == -1)
return err;
- if (sk->sk_stamp.tv_sec == 0)
- do_gettimeofday(&sk->sk_stamp);
- if (put_user(sk->sk_stamp.tv_sec, &ctv->tv_sec) ||
- put_user(sk->sk_stamp.tv_usec, &ctv->tv_usec))
+ if (tv.tv_sec == 0) {
+ sk->sk_stamp = ktime_get_real();
+ tv = ktime_to_timeval(sk->sk_stamp);
+ }
+ err = 0;
+ if (put_user(tv.tv_sec, &ctv->tv_sec) ||
+ put_user(tv.tv_usec, &ctv->tv_usec))
err = -EFAULT;
return err;
}
EXPORT_SYMBOL(compat_sock_get_timestamp);
-asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
- char __user *optval, int __user *optlen)
+int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
{
+ struct compat_timespec __user *ctv;
int err;
- struct socket *sock;
+ struct timespec ts;
- if ((sock = sockfd_lookup(fd, &err))!=NULL)
- {
- err = security_socket_getsockopt(sock, level,
- optname);
+ if (COMPAT_USE_64BIT_TIME)
+ return sock_get_timestampns (sk, userstamp);
+
+ ctv = (struct compat_timespec __user *) userstamp;
+ err = -ENOENT;
+ if (!sock_flag(sk, SOCK_TIMESTAMP))
+ sock_enable_timestamp(sk, SOCK_TIMESTAMP);
+ ts = ktime_to_timespec(sk->sk_stamp);
+ if (ts.tv_sec == -1)
+ return err;
+ if (ts.tv_sec == 0) {
+ sk->sk_stamp = ktime_get_real();
+ ts = ktime_to_timespec(sk->sk_stamp);
+ }
+ err = 0;
+ if (put_user(ts.tv_sec, &ctv->tv_sec) ||
+ put_user(ts.tv_nsec, &ctv->tv_nsec))
+ err = -EFAULT;
+ return err;
+}
+EXPORT_SYMBOL(compat_sock_get_timestampns);
+
+COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname,
+ char __user *, optval, int __user *, optlen)
+{
+ int err;
+ struct socket *sock = sockfd_lookup(fd, &err);
+
+ if (sock) {
+ err = security_socket_getsockopt(sock, level, optname);
if (err) {
sockfd_put(sock);
return err;
@@ -589,37 +531,285 @@ asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
}
return err;
}
+
+struct compat_group_req {
+ __u32 gr_interface;
+ struct __kernel_sockaddr_storage gr_group
+ __attribute__ ((aligned(4)));
+} __packed;
+
+struct compat_group_source_req {
+ __u32 gsr_interface;
+ struct __kernel_sockaddr_storage gsr_group
+ __attribute__ ((aligned(4)));
+ struct __kernel_sockaddr_storage gsr_source
+ __attribute__ ((aligned(4)));
+} __packed;
+
+struct compat_group_filter {
+ __u32 gf_interface;
+ struct __kernel_sockaddr_storage gf_group
+ __attribute__ ((aligned(4)));
+ __u32 gf_fmode;
+ __u32 gf_numsrc;
+ struct __kernel_sockaddr_storage gf_slist[1]
+ __attribute__ ((aligned(4)));
+} __packed;
+
+#define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \
+ sizeof(struct __kernel_sockaddr_storage))
+
+
+int compat_mc_setsockopt(struct sock *sock, int level, int optname,
+ char __user *optval, unsigned int optlen,
+ int (*setsockopt)(struct sock *, int, int, char __user *, unsigned int))
+{
+ char __user *koptval = optval;
+ int koptlen = optlen;
+
+ switch (optname) {
+ case MCAST_JOIN_GROUP:
+ case MCAST_LEAVE_GROUP:
+ {
+ struct compat_group_req __user *gr32 = (void *)optval;
+ struct group_req __user *kgr =
+ compat_alloc_user_space(sizeof(struct group_req));
+ u32 interface;
+
+ if (!access_ok(VERIFY_READ, gr32, sizeof(*gr32)) ||
+ !access_ok(VERIFY_WRITE, kgr, sizeof(struct group_req)) ||
+ __get_user(interface, &gr32->gr_interface) ||
+ __put_user(interface, &kgr->gr_interface) ||
+ copy_in_user(&kgr->gr_group, &gr32->gr_group,
+ sizeof(kgr->gr_group)))
+ return -EFAULT;
+ koptval = (char __user *)kgr;
+ koptlen = sizeof(struct group_req);
+ break;
+ }
+ case MCAST_JOIN_SOURCE_GROUP:
+ case MCAST_LEAVE_SOURCE_GROUP:
+ case MCAST_BLOCK_SOURCE:
+ case MCAST_UNBLOCK_SOURCE:
+ {
+ struct compat_group_source_req __user *gsr32 = (void *)optval;
+ struct group_source_req __user *kgsr = compat_alloc_user_space(
+ sizeof(struct group_source_req));
+ u32 interface;
+
+ if (!access_ok(VERIFY_READ, gsr32, sizeof(*gsr32)) ||
+ !access_ok(VERIFY_WRITE, kgsr,
+ sizeof(struct group_source_req)) ||
+ __get_user(interface, &gsr32->gsr_interface) ||
+ __put_user(interface, &kgsr->gsr_interface) ||
+ copy_in_user(&kgsr->gsr_group, &gsr32->gsr_group,
+ sizeof(kgsr->gsr_group)) ||
+ copy_in_user(&kgsr->gsr_source, &gsr32->gsr_source,
+ sizeof(kgsr->gsr_source)))
+ return -EFAULT;
+ koptval = (char __user *)kgsr;
+ koptlen = sizeof(struct group_source_req);
+ break;
+ }
+ case MCAST_MSFILTER:
+ {
+ struct compat_group_filter __user *gf32 = (void *)optval;
+ struct group_filter __user *kgf;
+ u32 interface, fmode, numsrc;
+
+ if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) ||
+ __get_user(interface, &gf32->gf_interface) ||
+ __get_user(fmode, &gf32->gf_fmode) ||
+ __get_user(numsrc, &gf32->gf_numsrc))
+ return -EFAULT;
+ koptlen = optlen + sizeof(struct group_filter) -
+ sizeof(struct compat_group_filter);
+ if (koptlen < GROUP_FILTER_SIZE(numsrc))
+ return -EINVAL;
+ kgf = compat_alloc_user_space(koptlen);
+ if (!access_ok(VERIFY_WRITE, kgf, koptlen) ||
+ __put_user(interface, &kgf->gf_interface) ||
+ __put_user(fmode, &kgf->gf_fmode) ||
+ __put_user(numsrc, &kgf->gf_numsrc) ||
+ copy_in_user(&kgf->gf_group, &gf32->gf_group,
+ sizeof(kgf->gf_group)) ||
+ (numsrc && copy_in_user(kgf->gf_slist, gf32->gf_slist,
+ numsrc * sizeof(kgf->gf_slist[0]))))
+ return -EFAULT;
+ koptval = (char __user *)kgf;
+ break;
+ }
+
+ default:
+ break;
+ }
+ return setsockopt(sock, level, optname, koptval, koptlen);
+}
+EXPORT_SYMBOL(compat_mc_setsockopt);
+
+int compat_mc_getsockopt(struct sock *sock, int level, int optname,
+ char __user *optval, int __user *optlen,
+ int (*getsockopt)(struct sock *, int, int, char __user *, int __user *))
+{
+ struct compat_group_filter __user *gf32 = (void *)optval;
+ struct group_filter __user *kgf;
+ int __user *koptlen;
+ u32 interface, fmode, numsrc;
+ int klen, ulen, err;
+
+ if (optname != MCAST_MSFILTER)
+ return getsockopt(sock, level, optname, optval, optlen);
+
+ koptlen = compat_alloc_user_space(sizeof(*koptlen));
+ if (!access_ok(VERIFY_READ, optlen, sizeof(*optlen)) ||
+ __get_user(ulen, optlen))
+ return -EFAULT;
+
+ /* adjust len for pad */
+ klen = ulen + sizeof(*kgf) - sizeof(*gf32);
+
+ if (klen < GROUP_FILTER_SIZE(0))
+ return -EINVAL;
+
+ if (!access_ok(VERIFY_WRITE, koptlen, sizeof(*koptlen)) ||
+ __put_user(klen, koptlen))
+ return -EFAULT;
+
+ /* have to allow space for previous compat_alloc_user_space, too */
+ kgf = compat_alloc_user_space(klen+sizeof(*optlen));
+
+ if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) ||
+ __get_user(interface, &gf32->gf_interface) ||
+ __get_user(fmode, &gf32->gf_fmode) ||
+ __get_user(numsrc, &gf32->gf_numsrc) ||
+ __put_user(interface, &kgf->gf_interface) ||
+ __put_user(fmode, &kgf->gf_fmode) ||
+ __put_user(numsrc, &kgf->gf_numsrc) ||
+ copy_in_user(&kgf->gf_group, &gf32->gf_group, sizeof(kgf->gf_group)))
+ return -EFAULT;
+
+ err = getsockopt(sock, level, optname, (char __user *)kgf, koptlen);
+ if (err)
+ return err;
+
+ if (!access_ok(VERIFY_READ, koptlen, sizeof(*koptlen)) ||
+ __get_user(klen, koptlen))
+ return -EFAULT;
+
+ ulen = klen - (sizeof(*kgf)-sizeof(*gf32));
+
+ if (!access_ok(VERIFY_WRITE, optlen, sizeof(*optlen)) ||
+ __put_user(ulen, optlen))
+ return -EFAULT;
+
+ if (!access_ok(VERIFY_READ, kgf, klen) ||
+ !access_ok(VERIFY_WRITE, gf32, ulen) ||
+ __get_user(interface, &kgf->gf_interface) ||
+ __get_user(fmode, &kgf->gf_fmode) ||
+ __get_user(numsrc, &kgf->gf_numsrc) ||
+ __put_user(interface, &gf32->gf_interface) ||
+ __put_user(fmode, &gf32->gf_fmode) ||
+ __put_user(numsrc, &gf32->gf_numsrc))
+ return -EFAULT;
+ if (numsrc) {
+ int copylen;
+
+ klen -= GROUP_FILTER_SIZE(0);
+ copylen = numsrc * sizeof(gf32->gf_slist[0]);
+ if (copylen > klen)
+ copylen = klen;
+ if (copy_in_user(gf32->gf_slist, kgf->gf_slist, copylen))
+ return -EFAULT;
+ }
+ return err;
+}
+EXPORT_SYMBOL(compat_mc_getsockopt);
+
+
/* Argument list sizes for compat_sys_socketcall */
#define AL(x) ((x) * sizeof(u32))
-static unsigned char nas[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
- AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
- AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
+static unsigned char nas[21] = {
+ AL(0), AL(3), AL(3), AL(3), AL(2), AL(3),
+ AL(3), AL(3), AL(4), AL(4), AL(4), AL(6),
+ AL(6), AL(2), AL(5), AL(5), AL(3), AL(3),
+ AL(4), AL(5), AL(4)
+};
#undef AL
-asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, unsigned flags)
+COMPAT_SYSCALL_DEFINE3(sendmsg, int, fd, struct compat_msghdr __user *, msg, unsigned int, flags)
+{
+ if (flags & MSG_CMSG_COMPAT)
+ return -EINVAL;
+ return __sys_sendmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
+}
+
+COMPAT_SYSCALL_DEFINE4(sendmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
+ unsigned int, vlen, unsigned int, flags)
+{
+ if (flags & MSG_CMSG_COMPAT)
+ return -EINVAL;
+ return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
+ flags | MSG_CMSG_COMPAT);
+}
+
+COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg, unsigned int, flags)
+{
+ if (flags & MSG_CMSG_COMPAT)
+ return -EINVAL;
+ return __sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
+}
+
+COMPAT_SYSCALL_DEFINE4(recv, int, fd, void __user *, buf, compat_size_t, len, unsigned int, flags)
{
- return sys_sendmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
+ return sys_recv(fd, buf, len, flags | MSG_CMSG_COMPAT);
}
-asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, unsigned int flags)
+COMPAT_SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, buf, compat_size_t, len,
+ unsigned int, flags, struct sockaddr __user *, addr,
+ int __user *, addrlen)
{
- return sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
+ return sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr, addrlen);
}
-asmlinkage long compat_sys_socketcall(int call, u32 __user *args)
+COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
+ unsigned int, vlen, unsigned int, flags,
+ struct compat_timespec __user *, timeout)
+{
+ int datagrams;
+ struct timespec ktspec;
+
+ if (flags & MSG_CMSG_COMPAT)
+ return -EINVAL;
+
+ if (timeout == NULL)
+ return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
+ flags | MSG_CMSG_COMPAT, NULL);
+
+ if (compat_get_timespec(&ktspec, timeout))
+ return -EFAULT;
+
+ datagrams = __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
+ flags | MSG_CMSG_COMPAT, &ktspec);
+ if (datagrams > 0 && compat_put_timespec(&ktspec, timeout))
+ datagrams = -EFAULT;
+
+ return datagrams;
+}
+
+COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
{
int ret;
u32 a[6];
u32 a0, a1;
-
- if (call < SYS_SOCKET || call > SYS_RECVMSG)
+
+ if (call < SYS_SOCKET || call > SYS_SENDMMSG)
return -EINVAL;
if (copy_from_user(a, args, nas[call]))
return -EFAULT;
a0 = a[0];
a1 = a[1];
-
- switch(call) {
+
+ switch (call) {
case SYS_SOCKET:
ret = sys_socket(a0, a1, a[2]);
break;
@@ -633,7 +823,7 @@ asmlinkage long compat_sys_socketcall(int call, u32 __user *args)
ret = sys_listen(a0, a1);
break;
case SYS_ACCEPT:
- ret = sys_accept(a0, compat_ptr(a1), compat_ptr(a[2]));
+ ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0);
break;
case SYS_GETSOCKNAME:
ret = sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2]));
@@ -651,13 +841,14 @@ asmlinkage long compat_sys_socketcall(int call, u32 __user *args)
ret = sys_sendto(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), a[5]);
break;
case SYS_RECV:
- ret = sys_recv(a0, compat_ptr(a1), a[2], a[3]);
+ ret = compat_sys_recv(a0, compat_ptr(a1), a[2], a[3]);
break;
case SYS_RECVFROM:
- ret = sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), compat_ptr(a[5]));
+ ret = compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3],
+ compat_ptr(a[4]), compat_ptr(a[5]));
break;
case SYS_SHUTDOWN:
- ret = sys_shutdown(a0,a1);
+ ret = sys_shutdown(a0, a1);
break;
case SYS_SETSOCKOPT:
ret = compat_sys_setsockopt(a0, a1, a[2],
@@ -670,9 +861,19 @@ asmlinkage long compat_sys_socketcall(int call, u32 __user *args)
case SYS_SENDMSG:
ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]);
break;
+ case SYS_SENDMMSG:
+ ret = compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]);
+ break;
case SYS_RECVMSG:
ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
break;
+ case SYS_RECVMMSG:
+ ret = compat_sys_recvmmsg(a0, compat_ptr(a1), a[2], a[3],
+ compat_ptr(a[4]));
+ break;
+ case SYS_ACCEPT4:
+ ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]);
+ break;
default:
ret = -EINVAL;
break;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 13:02:54 +0000