lib/vfscore: Register `preadv` to syscall_shim

Registers `preadv` system call to syscall_shim library.

Signed-off-by: Constantin Raducanu <raducanu.costi@gmail.com>
Reviewed-by: Daniel Dinca <dincadaniel97@gmail.com>

diff --git a/lib/vfscore/Makefile.uk b/lib/vfscore/Makefile.uk
index 1c2159a01196c9cdd60c2e39f5f96af661532ccd..c60c8d9f67089ffcef65a18d2b78560239ed0181 100644 (file)
--- a/lib/vfscore/Makefile.uk
+++ b/lib/vfscore/Makefile.uk
@@ -49,4 +49,5 @@ UK_PROVIDED_SYSCALLS-$(CONFIG_LIBVFSCORE) += mknod-3
 UK_PROVIDED_SYSCALLS-$(CONFIG_LIBVFSCORE) += rmdir-1
 UK_PROVIDED_SYSCALLS-$(CONFIG_LIBVFSCORE) += rename-2
 UK_PROVIDED_SYSCALLS-$(CONFIG_LIBVFSCORE) += fsync-1
-UK_PROVIDED_SYSCALLS-$(CONFIG_LIBVFSCORE) += fdatasync-1
\ No newline at end of file
+UK_PROVIDED_SYSCALLS-$(CONFIG_LIBVFSCORE) += fdatasync-1
+UK_PROVIDED_SYSCALLS-$(CONFIG_LIBVFSCORE) += preadv-4
\ No newline at end of file

diff --git a/lib/vfscore/exportsyms.uk b/lib/vfscore/exportsyms.uk
index 7a8fbdacb50107e3401ddaf8833696fa5f06a54f..15ddbf11c22f032416b2c3e7b303d349c936e2fc 100644 (file)
--- a/lib/vfscore/exportsyms.uk
+++ b/lib/vfscore/exportsyms.uk
@@ -92,6 +92,8 @@ mknod
 uk_syscall_e_mknod
 uk_syscall_r_mknod
 preadv
+uk_syscall_e_preadv
+uk_syscall_r_preadv
 ioctl
 fdatasync
 uk_syscall_e_fdatasync

diff --git a/lib/vfscore/main.c b/lib/vfscore/main.c
index 1f5cd14f5ac4bc31fbba5e996b78cf9fd7ef9f7b..141723a3ba181dcee7920a2fcc83b011b965e1c2 100644 (file)
--- a/lib/vfscore/main.c
+++ b/lib/vfscore/main.c
@@ -381,7 +381,8 @@ UK_SYSCALL_DEFINE(ssize_t, write, int, fd, const void *, buf, size_t, count)
        return pwrite(fd, buf, count, -1);
 }
 
-ssize_t preadv(int fd, const struct iovec *iov, int iovcnt, off_t offset)
+UK_SYSCALL_R_DEFINE(ssize_t, preadv, int, fd, const struct iovec*, iov,
+       int, iovcnt, off_t, offset)
 {
        struct vfscore_file *fp;
        size_t bytes;
@@ -389,18 +390,17 @@ ssize_t preadv(int fd, const struct iovec *iov, int iovcnt, off_t offset)
 
        error = fget(fd, &fp);
        if (error)
-               goto out_errno;
+               goto out_error;
 
        error = sys_read(fp, iov, iovcnt, offset, &bytes);
        fdrop(fp);
 
        if (has_error(error, bytes))
-               goto out_errno;
+               goto out_error;
        return bytes;
 
-       out_errno:
-       errno = error;
-       return -1;
+       out_error:
+       return -error;
 }
 
 LFS64(preadv);