diff options
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 84 |
1 files changed, 61 insertions, 23 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index fdf74e12f9..41d7dc19f3 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -3622,6 +3622,44 @@ static int do_fork(CPUState *env, unsigned int flags, abi_ulong newsp, return ret; } +/* warning : doesn't handle linux specific flags... */ +static int target_to_host_fcntl_cmd(int cmd) +{ + switch(cmd) { + case TARGET_F_DUPFD: + case TARGET_F_GETFD: + case TARGET_F_SETFD: + case TARGET_F_GETFL: + case TARGET_F_SETFL: + return cmd; + case TARGET_F_GETLK: + return F_GETLK; + case TARGET_F_SETLK: + return F_SETLK; + case TARGET_F_SETLKW: + return F_SETLKW; + case TARGET_F_GETOWN: + return F_GETOWN; + case TARGET_F_SETOWN: + return F_SETOWN; + case TARGET_F_GETSIG: + return F_GETSIG; + case TARGET_F_SETSIG: + return F_SETSIG; +#if TARGET_ABI_BITS == 32 + case TARGET_F_GETLK64: + return F_GETLK64; + case TARGET_F_SETLK64: + return F_SETLK64; + case TARGET_F_SETLKW64: + return F_SETLKW64; +#endif + default: + return -TARGET_EINVAL; + } + return -TARGET_EINVAL; +} + static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) { struct flock fl; @@ -3629,6 +3667,10 @@ static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) struct flock64 fl64; struct target_flock64 *target_fl64; abi_long ret; + int host_cmd = target_to_host_fcntl_cmd(cmd); + + if (host_cmd == -TARGET_EINVAL) + return host_cmd; switch(cmd) { case TARGET_F_GETLK: @@ -3640,7 +3682,7 @@ static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) fl.l_len = tswapl(target_fl->l_len); fl.l_pid = tswapl(target_fl->l_pid); unlock_user_struct(target_fl, arg, 0); - ret = get_errno(fcntl(fd, cmd, &fl)); + ret = get_errno(fcntl(fd, host_cmd, &fl)); if (ret == 0) { if (!lock_user_struct(VERIFY_WRITE, target_fl, arg, 0)) return -TARGET_EFAULT; @@ -3663,7 +3705,7 @@ static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) fl.l_len = tswapl(target_fl->l_len); fl.l_pid = tswapl(target_fl->l_pid); unlock_user_struct(target_fl, arg, 0); - ret = get_errno(fcntl(fd, cmd, &fl)); + ret = get_errno(fcntl(fd, host_cmd, &fl)); break; case TARGET_F_GETLK64: @@ -3675,7 +3717,7 @@ static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) fl64.l_len = tswapl(target_fl64->l_len); fl64.l_pid = tswap16(target_fl64->l_pid); unlock_user_struct(target_fl64, arg, 0); - ret = get_errno(fcntl(fd, cmd >> 1, &fl64)); + ret = get_errno(fcntl(fd, host_cmd, &fl64)); if (ret == 0) { if (!lock_user_struct(VERIFY_WRITE, target_fl64, arg, 0)) return -TARGET_EFAULT; @@ -3697,18 +3739,25 @@ static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) fl64.l_len = tswapl(target_fl64->l_len); fl64.l_pid = tswap16(target_fl64->l_pid); unlock_user_struct(target_fl64, arg, 0); - ret = get_errno(fcntl(fd, cmd >> 1, &fl64)); + ret = get_errno(fcntl(fd, host_cmd, &fl64)); break; - case F_GETFL: - ret = get_errno(fcntl(fd, cmd, arg)); + case TARGET_F_GETFL: + ret = get_errno(fcntl(fd, host_cmd, arg)); if (ret >= 0) { ret = host_to_target_bitmask(ret, fcntl_flags_tbl); } break; - case F_SETFL: - ret = get_errno(fcntl(fd, cmd, target_to_host_bitmask(arg, fcntl_flags_tbl))); + case TARGET_F_SETFL: + ret = get_errno(fcntl(fd, host_cmd, target_to_host_bitmask(arg, fcntl_flags_tbl))); + break; + + case TARGET_F_SETOWN: + case TARGET_F_GETOWN: + case TARGET_F_SETSIG: + case TARGET_F_GETSIG: + ret = get_errno(fcntl(fd, host_cmd, arg)); break; default: @@ -6501,20 +6550,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, struct target_eabi_flock64 *target_efl; #endif - switch(arg2){ - case TARGET_F_GETLK64: - cmd = F_GETLK64; - break; - case TARGET_F_SETLK64: - cmd = F_SETLK64; - break; - case TARGET_F_SETLKW64: - cmd = F_SETLK64; - break; - default: - cmd = arg2; - break; - } + cmd = target_to_host_fcntl_cmd(arg2); + if (cmd == -TARGET_EINVAL) + return cmd; switch(arg2) { case TARGET_F_GETLK64: @@ -6594,7 +6632,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, ret = get_errno(fcntl(arg1, cmd, &fl)); break; default: - ret = do_fcntl(arg1, cmd, arg3); + ret = do_fcntl(arg1, arg2, arg3); break; } break; |