bsd-user/bsd-file.h: Add implementations for read, pread, readv and preadv

Implement do_bsd_{read,pread,readv,preadv}. Connect them to the system
call table.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c
index 1c4c9983f1..8ca92f2985 100644
--- a/bsd-user/freebsd/os-syscall.c
+++ b/bsd-user/freebsd/os-syscall.c
@@ -42,6 +42,14 @@
 
 #include "bsd-file.h"
 
+/* I/O */
+safe_syscall3(ssize_t, read, int, fd, void *, buf, size_t, nbytes);
+safe_syscall4(ssize_t, pread, int, fd, void *, buf, size_t, nbytes, off_t,
+    offset);
+safe_syscall3(ssize_t, readv, int, fd, const struct iovec *, iov, int, iovcnt);
+safe_syscall4(ssize_t, preadv, int, fd, const struct iovec *, iov, int, iovcnt,
+    off_t, offset);
+
 void target_set_brk(abi_ulong new_brk)
 {
 }
@@ -200,6 +208,26 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1,
     abi_long ret;
 
     switch (num) {
+
+        /*
+         * File system calls.
+         */
+    case TARGET_FREEBSD_NR_read: /* read(2) */
+        ret = do_bsd_read(arg1, arg2, arg3);
+        break;
+
+    case TARGET_FREEBSD_NR_pread: /* pread(2) */
+        ret = do_bsd_pread(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
+        break;
+
+    case TARGET_FREEBSD_NR_readv: /* readv(2) */
+        ret = do_bsd_readv(arg1, arg2, arg3);
+        break;
+
+    case TARGET_FREEBSD_NR_preadv: /* preadv(2) */
+        ret = do_bsd_preadv(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
+        break;
+
     default:
         qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
         ret = -TARGET_ENOSYS;