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firmware-utils: when using open with O_CREAT and O_WRONLY, also use O_TRUNC to ensure that overwritten files have the right size (fixes #3505)

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SVN-Revision: 12667
This commit is contained in:
Felix Fietkau
2008-09-23 16:12:40 +00:00
parent c3ae8337f4
commit 216c6cd8a9
3 changed files with 4 additions and 4 deletions
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4
tools/firmware-utils/src/motorola-bin.c
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@@ -170,7 +170,7 @@ int main(int argc, char **argv)
exit(3);
} else {
// all is well, write the file without the prefix
if ((fd = open(argv[3], O_CREAT|O_WRONLY,0644)) < 0
if ((fd = open(argv[3], O_CREAT|O_WRONLY|O_TRUNC,0644)) < 0
|| write(fd, trx + sizeof(struct motorola), len - sizeof(struct motorola)) != len - sizeof(struct motorola)
|| close(fd) < 0)
{
@@ -211,7 +211,7 @@ int main(int argc, char **argv)
firmware->crc = htonl(crc32buf((unsigned char *)&firmware->flags, sizeof(firmware->flags) + len));
// write the firmware
if ((fd = open(argv[3], O_CREAT|O_WRONLY,0644)) < 0
if ((fd = open(argv[3], O_CREAT|O_WRONLY|O_TRUNC,0644)) < 0
|| write(fd, firmware, sizeof(struct motorola) + len) != sizeof(struct motorola) + len
|| close(fd) < 0)
{