Make the error handling common, and make sure the file is always closed
on error. Rename the parameter to be more description and add comments.
Signed-off-by: Simon Glass <s...@chromium.org>
---
Changes in v3:
- Add new patch to improve error handling in fit_common
Changes in v2: None
tools/fit_check_sign.c | 4 ++--
tools/fit_common.c | 28 ++++++++++++++--------------
tools/fit_common.h | 14 ++++++++++++--
tools/fit_info.c | 2 +-
4 files changed, 29 insertions(+), 19 deletions(-)
diff --git a/tools/fit_check_sign.c b/tools/fit_check_sign.c
index d6d9340..e6df610 100644
--- a/tools/fit_check_sign.c
+++ b/tools/fit_check_sign.c
@@ -61,10 +61,10 @@ int main(int argc, char **argv)
break;
}
- ffd = mmap_fdt(cmdname, fdtfile, &fit_blob, &fsbuf, 0);
+ ffd = mmap_fdt(cmdname, fdtfile, &fit_blob, &fsbuf, false);
if (ffd < 0)
return EXIT_FAILURE;
- kfd = mmap_fdt(cmdname, keyfile, &key_blob, &ksbuf, 0);
+ kfd = mmap_fdt(cmdname, keyfile, &key_blob, &ksbuf, false);
if (ffd < 0)
return EXIT_FAILURE;
diff --git a/tools/fit_common.c b/tools/fit_common.c
index ee1767b..286f357 100644
--- a/tools/fit_common.c
+++ b/tools/fit_common.c
@@ -38,8 +38,8 @@ int fit_check_image_types(uint8_t type)
return EXIT_FAILURE;
}
-int mmap_fdt(char *cmdname, const char *fname, void **blobp,
- struct stat *sbuf, int useunlink)
+int mmap_fdt(const char *cmdname, const char *fname, void **blobp,
+ struct stat *sbuf, bool delete_on_error)
{
void *ptr;
int fd;
@@ -50,17 +50,13 @@ int mmap_fdt(char *cmdname, const char *fname, void **blobp,
if (fd < 0) {
fprintf(stderr, "%s: Can't open %s: %s\n",
cmdname, fname, strerror(errno));
- if (useunlink)
- unlink(fname);
- return -1;
+ goto err;
}
if (fstat(fd, sbuf) < 0) {
fprintf(stderr, "%s: Can't stat %s: %s\n",
cmdname, fname, strerror(errno));
- if (useunlink)
- unlink(fname);
- return -1;
+ goto err;
}
errno = 0;
@@ -68,19 +64,23 @@ int mmap_fdt(char *cmdname, const char *fname, void **blobp,
if ((ptr == MAP_FAILED) || (errno != 0)) {
fprintf(stderr, "%s: Can't read %s: %s\n",
cmdname, fname, strerror(errno));
- if (useunlink)
- unlink(fname);
- return -1;
+ goto err;
}
/* check if ptr has a valid blob */
if (fdt_check_header(ptr)) {
fprintf(stderr, "%s: Invalid FIT blob\n", cmdname);
- if (useunlink)
- unlink(fname);
- return -1;
+ goto err;
}
*blobp = ptr;
return fd;
+
+err:
+ if (fd >= 0)
+ close(fd);
+ if (delete_on_error)
+ unlink(fname);
+
+ return -1;
}
diff --git a/tools/fit_common.h b/tools/fit_common.h
index adf4404..adcee6d 100644
--- a/tools/fit_common.h
+++ b/tools/fit_common.h
@@ -16,7 +16,17 @@ int fit_verify_header(unsigned char *ptr, int image_size,
int fit_check_image_types(uint8_t type);
-int mmap_fdt(char *cmdname, const char *fname, void **blobp,
- struct stat *sbuf, int useunlink);
+/**
+ * Map an FDT into memory, optionally increasing its size
+ *
+ * @cmdname: Tool name (for displaying with error messages)
+ * @fname: Filename containing FDT
+ * @blobp: Returns pointer to FDT blob
+ * @sbuf: File status information is stored here
+ * @delete_on_error: true to delete the file if we get an error
+ * @return 0 if OK, -1 on error.
+ */
+int mmap_fdt(const char *cmdname, const char *fname, void **blobp,
+ struct stat *sbuf, bool delete_on_error);
#endif /* _FIT_COMMON_H_ */
diff --git a/tools/fit_info.c b/tools/fit_info.c
index 50f3c8e..9442ff1 100644
--- a/tools/fit_info.c
+++ b/tools/fit_info.c
@@ -68,7 +68,7 @@ int main(int argc, char **argv)
break;
}
- ffd = mmap_fdt(cmdname, fdtfile, &fit_blob, &fsbuf, 0);
+ ffd = mmap_fdt(cmdname, fdtfile, &fit_blob, &fsbuf, false);
if (ffd < 0) {
printf("Could not open %s\n", fdtfile);
--
1.9.1.423.g4596e3a
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
