lbutils/file: rename rw_file_exact

call it rw_exact, so that it's closer to
the name rw. it matches naming more closely;
the alternative was to call rw rw_file

but read/write can handle more than just files!

Signed-off-by: Leah Rowe <leah@libreboot.org>

util/libreboot-utils/include/common.h

@@ -457,7 +457,7 @@ ssize_t rw_gbe_file_exact(int fd, unsigned char *mem, size_t nrw,
  */
 
 int fsync_dir(const char *path);
-ssize_t rw_file_exact(int fd, unsigned char *mem, size_t len,
+ssize_t rw_exact(int fd, unsigned char *mem, size_t len,
     off_t off, int rw_type);
 ssize_t rw(int fd, void *mem, size_t nrw,
     off_t off, int rw_type);

util/libreboot-utils/lib/command.c

@@ -492,7 +492,7 @@ cat_buf(unsigned char *b)
 	if (b == NULL)
 		exitf("null pointer in cat command");
 
-	if (rw_file_exact(STDOUT_FILENO, b,
+	if (rw_exact(STDOUT_FILENO, b,
 	    GBE_PART_SIZE, 0, IO_WRITE) < 0)
 		exitf("stdout: cat");
 }

util/libreboot-utils/lib/file.c

@@ -127,7 +127,7 @@ err_fsync_dir:
 	return with_fallback_errno(EIO);
 }
 
-/* rw_file_exact() - Read perfectly or die
+/* rw_exact() - Read perfectly or die
  *
  * Read/write, and absolutely insist on an
  * absolute read; e.g. if 100 bytes are
@@ -145,7 +145,7 @@ err_fsync_dir:
  */
 
 ssize_t
-rw_file_exact(int fd, unsigned char *mem, size_t nrw,
+rw_exact(int fd, unsigned char *mem, size_t nrw,
     off_t off, int rw_type)
 {
 	int saved_errno = errno;
@@ -157,13 +157,13 @@ rw_file_exact(int fd, unsigned char *mem, size_t nrw,
 	errno = 0;
 
 	if (io_args(fd, mem, nrw, off, rw_type) == -1)
-		goto err_rw_file_exact;
+		goto err_rw_exact;
 
 	while (1) {
 	
 		/* Prevent theoretical overflow */
 		if (if_err(rval >= 0 && (size_t)rval > (nrw - rc), EOVERFLOW))
-			goto err_rw_file_exact;
+			goto err_rw_exact;
 
 		rc += rval;
 		if ((size_t)rc >= nrw)
@@ -173,22 +173,22 @@ rw_file_exact(int fd, unsigned char *mem, size_t nrw,
 		nrw_cur = (size_t)(nrw - (size_t)rc);
 
 		if (if_err(off < 0, EOVERFLOW))
-			goto err_rw_file_exact;
+			goto err_rw_exact;
 
 		off_cur = off + (off_t)rc;
 
 		if ((rval = rw(fd, mem_cur, nrw_cur, off_cur, rw_type)) <= 0)
-			goto err_rw_file_exact;
+			goto err_rw_exact;
 	}
 
 	if (if_err((size_t)rc != nrw, EIO) ||
 	    (rval = rw_over_nrw(rc, nrw)) < 0)
-		goto err_rw_file_exact;
+		goto err_rw_exact;
 
 	reset_caller_errno(rval);
 	return rval;
 
-err_rw_file_exact:
+err_rw_exact:
 	return with_fallback_errno(EIO);
 }
 
@@ -202,7 +202,7 @@ err_rw_file_exact:
  *
  * WARNING: this function allows zero-byte returns.
  * this is intentional, to mimic libc behaviour.
- * use rw_file_exact if you need to avoid this.
+ * use rw_exact if you need to avoid this.
  * (ditto partial writes/reads)
  *
  */

util/libreboot-utils/lib/io.c

@@ -108,7 +108,7 @@ read_file(void)
 
 	/* read main file
 	 */
-	_r = rw_file_exact(f->gbe_fd, f->buf, f->gbe_file_size,
+	_r = rw_exact(f->gbe_fd, f->buf, f->gbe_file_size,
 	    0, IO_PREAD);
 
 	if (_r < 0)
@@ -116,7 +116,7 @@ read_file(void)
 
 	/* copy to tmpfile
 	 */
-	_r = rw_file_exact(f->tmp_fd, f->buf, f->gbe_file_size,
+	_r = rw_exact(f->tmp_fd, f->buf, f->gbe_file_size,
 	    0, IO_PWRITE);
 
 	if (_r < 0)
@@ -139,7 +139,7 @@ read_file(void)
 	if (fsync_on_eintr(f->tmp_fd) == -1)
 		exitf("%s: fsync (tmpfile copy)", f->tname);
 
-	_r = rw_file_exact(f->tmp_fd, f->bufcmp, f->gbe_file_size,
+	_r = rw_exact(f->tmp_fd, f->bufcmp, f->gbe_file_size,
 	    0, IO_PREAD);
 
 	if (_r < 0)
@@ -556,7 +556,7 @@ rw_gbe_file_exact(int fd, unsigned char *mem, size_t nrw,
 	if (nrw > (size_t)GBE_PART_SIZE)
 		goto err_rw_gbe_file_exact;
 
-	r = rw_file_exact(fd, mem, nrw, off, rw_type);
+	r = rw_exact(fd, mem, nrw, off, rw_type);
 
 	return rw_over_nrw(r, nrw);