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Make close() check for a valid fd and set errno accordingly.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1965 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Heikki Hannikainen 2002-08-24 09:47:54 +00:00
parent bd510c2d2b
commit adbe4eddf9
1 changed files with 8 additions and 0 deletions
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8
firmware/common/file.c
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@ -122,6 +122,14 @@ int open(char* pathname, int flags)
int close(int fd) int close(int fd)
{ {
if (fd < 0 || fd > MAX_OPEN_FILES-1) {
errno = EINVAL;
return -1;
}
if (!openfiles[fd].busy) {
errno = EBADF;
return -1;
}
openfiles[fd].busy = false; openfiles[fd].busy = false;
return 0; return 0;
} }