[U-Boot] [PATCH v2 17/27] tools: Add a function to obtain the size of a file

Simon Glass
2016-02-23T05:55:49Z

This will be used in mkimage when working out the required size of the FIT
based on the files to be placed into it.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

Changes in v2: None

doc/mkimage.1 | 4 ++--
tools/imagetool.c | 22 ++++++++++++++++++++++
tools/imagetool.h | 12 ++++++++++++
3 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/doc/mkimage.1 b/doc/mkimage.1
index b48f70b..1b9d18c 100644
--- a/doc/mkimage.1
+++ b/doc/mkimage.1
@@ -164,7 +164,7 @@ skipping those for which keys cannot be found. Also add a comment.
.nf
.B mkimage -f kernel.its -k /public/signing-keys -K u-boot.dtb \\\\
.br
-.B -c "Kernel 3.8 image for production devices" kernel.itb
+.B -c """Kernel 3.8 image for production devices""" kernel.itb
.fi

.P
@@ -175,7 +175,7 @@ with unavailable keys are skipped.
.nf
.B mkimage -F -k /secret/signing-keys -K u-boot.dtb \\\\
.br
-.B -c "Kernel 3.8 image for production devices" kernel.itb
+.B -c """Kernel 3.8 image for production devices""" kernel.itb
.fi

.SH HOMEPAGE
diff --git a/tools/imagetool.c b/tools/imagetool.c
index 4b0b73d..351211c 100644
--- a/tools/imagetool.c
+++ b/tools/imagetool.c
@@ -91,3 +91,25 @@ int imagetool_save_subimage(

return 0;
}
+
+int imagetool_get_filesize(struct image_tool_params *params, const char *fname)
+{
+ struct stat sbuf;
+ int fd;
+
+ fd = open(fname, O_RDONLY | O_BINARY);
+ if (fd < 0) {
+ fprintf(stderr, "%s: Can't open %s: %s\n",
+ params->cmdname, fname, strerror(errno));
+ return -1;
+ }
+
+ if (fstat(fd, &sbuf) < 0) {
+ fprintf(stderr, "%s: Can't stat %s: %s\n",
+ params->cmdname, fname, strerror(errno));
+ return -1;
+ }
+ close(fd);
+
+ return sbuf.st_size;
+}
diff --git a/tools/imagetool.h b/tools/imagetool.h
index e0397f7..3cf42ac 100644
--- a/tools/imagetool.h
+++ b/tools/imagetool.h
@@ -181,6 +181,18 @@ int imagetool_save_subimage(
ulong file_data,
ulong file_len);

+/**
+ * imagetool_get_filesize() - Utility function to obtain the size of a file
+ *
+ * This function prints a message if an error occurs, showing the error that
+ * was obtained.
+ *
+ * @params: mkimage parameters
+ * @fname: filename to check
+ * @return size of file, or -ve value on error
+ */
+int imagetool_get_filesize(struct image_tool_params *params, const char *fname);
+
/*
* There is a c file associated with supported image type low level code
* for ex. default_image.c, fit_image.c
--
2.7.0.rc3.207.g0ac5344