From c2ded8b6ba39c639a3d7ff2f4f21a6fa22ef96a9 Mon Sep 17 00:00:00 2001
From: Andre Noll <maan@tuebingen.mpg.de>
Date: Sun, 14 Jan 2018 18:57:22 +0100
Subject: [PATCH] fd.c: Simplify para_mmap().

Both callers pass in a zero offset, so we can get rid of this
parameter.
---
 fd.c  | 8 +++-----
 fd.h  | 3 +--
 vss.c | 2 +-
 3 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/fd.c b/fd.c
index 7079b51c..86a1f105 100644
--- a/fd.c
+++ b/fd.c
@@ -455,22 +455,20 @@ again:
  * PROT_EXEC PROT_READ PROT_WRITE.
  * \param flags Exactly one of MAP_SHARED and MAP_PRIVATE.
  * \param fd The file to mmap from.
- * \param offset Mmap start.
  * \param map Result pointer.
  *
  * \return Standard.
  *
  * \sa mmap(2).
  */
-int para_mmap(size_t length, int prot, int flags, int fd, off_t offset,
-		void *map)
+int para_mmap(size_t length, int prot, int flags, int fd, void *map)
 {
 	void **m = map;
 
 	errno = EINVAL;
 	if (!length)
 		goto err;
-	*m = mmap(NULL, length, prot, flags, fd, offset);
+	*m = mmap(NULL, length, prot, flags, fd, (off_t)0);
 	if (*m != MAP_FAILED)
 		return 1;
 err:
@@ -639,7 +637,7 @@ int mmap_full_file(const char *path, int open_mode, void **map,
 	if (S_ISDIR(file_status.st_mode))
 		goto out;
 
-	ret = para_mmap(*size, mmap_prot, mmap_flags, fd, 0, map);
+	ret = para_mmap(*size, mmap_prot, mmap_flags, fd, map);
 out:
 	if (ret < 0 || !fd_ptr)
 		close(fd);
diff --git a/fd.h b/fd.h
index 106f5a4c..25eea8a2 100644
--- a/fd.h
+++ b/fd.h
@@ -12,8 +12,7 @@ __must_check int mark_fd_nonblocking(int fd);
 __must_check int mark_fd_blocking(int fd);
 void para_fd_set(int fd, fd_set *fds, int *max_fileno);
 __must_check int para_fgets(char *line, int size, FILE *f);
-int para_mmap(size_t length, int prot, int flags, int fd, off_t offset,
-		void *map);
+int para_mmap(size_t length, int prot, int flags, int fd, void *map);
 int para_open(const char *path, int flags, mode_t mode);
 int para_mkdir(const char *path, mode_t mode);
 int para_chdir(const char *path);
diff --git a/vss.c b/vss.c
index 00c632c7..f69225ea 100644
--- a/vss.c
+++ b/vss.c
@@ -997,7 +997,7 @@ static void recv_afs_result(struct vss_task *vsst, fd_set *rfds)
 		goto err;
 	}
 	ret = para_mmap(statbuf.st_size, PROT_READ, MAP_PRIVATE | MAP_POPULATE,
-		passed_fd, 0, &vsst->map);
+		passed_fd, &vsst->map);
 	if (ret < 0)
 		goto err;
 	vsst->mapsize = statbuf.st_size;
-- 
2.39.2