diff options
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 245 |
1 files changed, 193 insertions, 52 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 6fae50dd01..0abe685030 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -41,8 +41,10 @@ #include <sys/uio.h> #include <sys/poll.h> #include <sys/times.h> +#include <sys/shm.h> #include <utime.h> //#include <sys/user.h> +#include <netinet/ip.h> #include <netinet/tcp.h> #define termios host_termios @@ -325,7 +327,7 @@ static inline void host_to_target_fds(target_long *target_fds, target_long v; if (target_fds) { - nw = n / TARGET_LONG_BITS; + nw = (n + TARGET_LONG_BITS - 1) / TARGET_LONG_BITS; k = 0; for(i = 0;i < nw; i++) { v = 0; @@ -530,61 +532,116 @@ static inline void host_to_target_cmsg(struct target_msghdr *target_msgh, static long do_setsockopt(int sockfd, int level, int optname, void *optval, socklen_t optlen) { - if (level == SOL_TCP) { + int val, ret; + + switch(level) { + case SOL_TCP: /* TCP options all take an 'int' value. */ - int val; - if (optlen < sizeof(uint32_t)) return -EINVAL; - - val = tswap32(*(uint32_t *)optval); - return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); - } - - else if (level != SOL_SOCKET) { - gemu_log("Unsupported setsockopt level: %d\n", level); - return -ENOSYS; - } - - switch (optname) { - /* Options with 'int' argument. */ - case SO_DEBUG: - case SO_REUSEADDR: - case SO_TYPE: - case SO_ERROR: - case SO_DONTROUTE: - case SO_BROADCAST: - case SO_SNDBUF: - case SO_RCVBUF: - case SO_KEEPALIVE: - case SO_OOBINLINE: - case SO_NO_CHECK: - case SO_PRIORITY: - case SO_BSDCOMPAT: - case SO_PASSCRED: - case SO_TIMESTAMP: - case SO_RCVLOWAT: - case SO_RCVTIMEO: - case SO_SNDTIMEO: - { - int val; - if (optlen < sizeof(uint32_t)) - return -EINVAL; - val = tswap32(*(uint32_t *)optval); - return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); - } - + + if (get_user(val, (uint32_t *)optval)) + return -EFAULT; + ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); + break; + case SOL_IP: + switch(optname) { + case IP_HDRINCL: + val = 0; + if (optlen >= sizeof(uint32_t)) { + if (get_user(val, (uint32_t *)optval)) + return -EFAULT; + } else if (optlen >= 1) { + if (get_user(val, (uint8_t *)optval)) + return -EFAULT; + } + ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); + break; + default: + goto unimplemented; + } + break; + case SOL_SOCKET: + switch (optname) { + /* Options with 'int' argument. */ + case SO_DEBUG: + case SO_REUSEADDR: + case SO_TYPE: + case SO_ERROR: + case SO_DONTROUTE: + case SO_BROADCAST: + case SO_SNDBUF: + case SO_RCVBUF: + case SO_KEEPALIVE: + case SO_OOBINLINE: + case SO_NO_CHECK: + case SO_PRIORITY: + case SO_BSDCOMPAT: + case SO_PASSCRED: + case SO_TIMESTAMP: + case SO_RCVLOWAT: + case SO_RCVTIMEO: + case SO_SNDTIMEO: + if (optlen < sizeof(uint32_t)) + return -EINVAL; + if (get_user(val, (uint32_t *)optval)) + return -EFAULT; + ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); + break; + default: + goto unimplemented; + } + break; default: - gemu_log("Unsupported setsockopt SOL_SOCKET option: %d\n", optname); - return -ENOSYS; + unimplemented: + gemu_log("Unsupported setsockopt level=%d optname=%d \n", level, optname); + ret = -ENOSYS; } + return ret; } static long do_getsockopt(int sockfd, int level, int optname, void *optval, socklen_t *optlen) { - gemu_log("getsockopt not yet supported\n"); - return -ENOSYS; + int len, lv, val, ret; + + switch(level) { + case SOL_SOCKET: + switch (optname) { + case SO_LINGER: + case SO_RCVTIMEO: + case SO_SNDTIMEO: + case SO_PEERCRED: + case SO_PEERNAME: + /* These don't just return a single integer */ + goto unimplemented; + default: + if (get_user(len, optlen)) + return -EFAULT; + if (len < 0) + return -EINVAL; + lv = sizeof(int); + ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); + if (ret < 0) + return ret; + val = tswap32(val); + if (len > lv) + len = lv; + if (copy_to_user(optval, &val, len)) + return -EFAULT; + if (put_user(len, optlen)) + return -EFAULT; + break; + } + break; + default: + unimplemented: + gemu_log("getsockopt level=%d optname=%d not yet supported\n", + level, optname); + ret = -ENOSYS; + break; + } + return ret; } static long do_socketcall(int num, int32_t *vptr) @@ -807,12 +864,9 @@ static long do_socketcall(int num, int32_t *vptr) int level = tswap32(vptr[1]); int optname = tswap32(vptr[2]); void *optval = (void *)tswap32(vptr[3]); - uint32_t *target_len = (void *)tswap32(vptr[4]); - socklen_t optlen = tswap32(*target_len); + uint32_t *poptlen = (void *)tswap32(vptr[4]); - ret = do_getsockopt(sockfd, level, optname, optval, &optlen); - if (!is_error(ret)) - *target_len = tswap32(optlen); + ret = do_getsockopt(sockfd, level, optname, optval, poptlen); } break; default: @@ -823,6 +877,92 @@ static long do_socketcall(int num, int32_t *vptr) return ret; } + +#define N_SHM_REGIONS 32 + +static struct shm_region { + uint32_t start; + uint32_t size; +} shm_regions[N_SHM_REGIONS]; + +static long do_ipc(long call, long first, long second, long third, + long ptr, long fifth) +{ + int version; + long ret = 0; + unsigned long raddr; + struct shmid_ds shm_info; + int i; + + version = call >> 16; + call &= 0xffff; + + switch (call) { + case IPCOP_shmat: + /* SHM_* flags are the same on all linux platforms */ + ret = get_errno((long) shmat(first, (void *) ptr, second)); + if (is_error(ret)) + break; + raddr = ret; + /* find out the length of the shared memory segment */ + + ret = get_errno(shmctl(first, IPC_STAT, &shm_info)); + if (is_error(ret)) { + /* can't get length, bail out */ + shmdt((void *) raddr); + break; + } + page_set_flags(raddr, raddr + shm_info.shm_segsz, + PAGE_VALID | PAGE_READ | + ((second & SHM_RDONLY)? 0: PAGE_WRITE)); + for (i = 0; i < N_SHM_REGIONS; ++i) { + if (shm_regions[i].start == 0) { + shm_regions[i].start = raddr; + shm_regions[i].size = shm_info.shm_segsz; + break; + } + } + if (put_user(raddr, (uint32_t *)third)) + return -EFAULT; + ret = 0; + break; + case IPCOP_shmdt: + for (i = 0; i < N_SHM_REGIONS; ++i) { + if (shm_regions[i].start == ptr) { + shm_regions[i].start = 0; + page_set_flags(ptr, shm_regions[i].size, 0); + break; + } + } + ret = get_errno(shmdt((void *) ptr)); + break; + + case IPCOP_shmget: + /* IPC_* flag values are the same on all linux platforms */ + ret = get_errno(shmget(first, second, third)); + break; + + /* IPC_* and SHM_* command values are the same on all linux platforms */ + case IPCOP_shmctl: + switch(second) { + case IPC_RMID: + case SHM_LOCK: + case SHM_UNLOCK: + ret = get_errno(shmctl(first, second, NULL)); + break; + default: + goto unimplemented; + } + break; + default: + unimplemented: + gemu_log("Unsupported ipc call: %ld (version %d)\n", call, version); + ret = -ENOSYS; + break; + } + return ret; +} + /* kernel structure types definitions */ #define IFNAMSIZ 16 @@ -2205,7 +2345,8 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3, case TARGET_NR_sysinfo: goto unimplemented; case TARGET_NR_ipc: - goto unimplemented; + ret = do_ipc(arg1, arg2, arg3, arg4, arg5, arg6); + break; case TARGET_NR_fsync: ret = get_errno(fsync(arg1)); break; |