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author | Randall Spangler <rspangler@chromium.org> | 2013-06-27 12:57:31 -0700 |
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committer | ChromeBot <chrome-bot@google.com> | 2013-06-28 10:27:33 -0700 |
commit | 61820ceb435917607107674cd0eb888598072dbf (patch) | |
tree | db948e312da9e1b04b50d11d9d2597d3598821d4 /util/misc_util.c | |
parent | bbbc7ebc5baceed3b3f7e477e09d299da1b0b935 (diff) | |
download | chrome-ec-61820ceb435917607107674cd0eb888598072dbf.tar.gz |
Split file read/write functions out of ectool.c
ectool.c has gotten monstrously huge. Refactor out some utility functions.
This is precursor work to refactoring out a lower-level flash
read/write interface.
BUG=chrome-os-partner:20571
BRANCH=none
TEST=ectool flashread 0x20000 0x80 /tmp foo -> works
Change-Id: I26dae609a73e54e8adaec56edbdce6a0bb4b8758
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/60265
Reviewed-by: Vic Yang <victoryang@chromium.org>
Diffstat (limited to 'util/misc_util.c')
-rw-r--r-- | util/misc_util.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/util/misc_util.c b/util/misc_util.c new file mode 100644 index 0000000000..8410f03cfa --- /dev/null +++ b/util/misc_util.c @@ -0,0 +1,83 @@ +/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include <ctype.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "misc_util.h" + +int write_file(const char *filename, const char *buf, int size) +{ + FILE *f; + int i; + + /* Write to file */ + f = fopen(filename, "wb"); + if (!f) { + perror("Error opening output file"); + return -1; + } + i = fwrite(buf, 1, size, f); + fclose(f); + if (i != size) { + perror("Error writing to file"); + return -1; + } + + return 0; +} + +char *read_file(const char *filename, int *size) +{ + FILE *f = fopen(filename, "rb"); + char *buf; + int i; + + if (!f) { + perror("Error opening input file"); + return NULL; + } + + fseek(f, 0, SEEK_END); + *size = ftell(f); + rewind(f); + if (*size > 0x100000) { + fprintf(stderr, "File seems unreasonably large\n"); + fclose(f); + return NULL; + } + + buf = (char *)malloc(*size); + if (!buf) { + fprintf(stderr, "Unable to allocate buffer.\n"); + fclose(f); + return NULL; + } + + printf("Reading %d bytes from %s...\n", *size, filename); + i = fread(buf, 1, *size, f); + fclose(f); + if (i != *size) { + perror("Error reading file"); + free(buf); + return NULL; + } + + return buf; +} + +int is_string_printable(const char *buf) +{ + while (*buf) { + if (!isprint(*buf)) + return 0; + buf++; + } + + return 1; +} |