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When clearing a device we do now ignore an error when we could write anything

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at all.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30151 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2009-04-13 23:57:12 +00:00
parent dd0e375f41
commit 81f87f58ed
1 changed files with 8 additions and 3 deletions
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11
src/tools/create_image.cpp
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@ -131,11 +131,16 @@ main(int argc, char *argv[])
char buffer[1024 * 1024]; char buffer[1024 * 1024];
memset(buffer, 0, sizeof(buffer)); memset(buffer, 0, sizeof(buffer));
off_t totalWritten = 0;
ssize_t written; ssize_t written;
while ((written = write(fd, buffer, sizeof(buffer))) > 0) { while ((written = write(fd, buffer, sizeof(buffer))) > 0)
} totalWritten += written;
if (written < 0) { // Only fail, if an error occurs and we haven't written anything at
// all yet.
// TODO: We should probably first determine the size of the device
// and try to write only that much.
if (totalWritten == 0 && written < 0) {
fprintf(stderr, "Error: writing to device file %s failed " fprintf(stderr, "Error: writing to device file %s failed "
"(%s)\n", file, strerror(errno)); "(%s)\n", file, strerror(errno));
exit(EXIT_FAILURE); exit(EXIT_FAILURE);