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| author | H. Peter Anvin <hpa@zytor.com> | 2007-05-22 23:27:46 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2007-05-22 23:27:46 -0700 |
| commit | b901a125510486e190dd841dfa616cafff0c9242 (patch) | |
| tree | e0fe9893d5f3dc204b72509e70add30d414e2107 /pxelinux.asm | |
| parent | 1e7084a905560314d7a30b7826d77783f4d3740e (diff) | |
| download | syslinux-elf-b901a125510486e190dd841dfa616cafff0c9242.tar.gz syslinux-elf-b901a125510486e190dd841dfa616cafff0c9242.tar.xz syslinux-elf-b901a125510486e190dd841dfa616cafff0c9242.zip | |
Make it safe to call close_file on an already closed file.syslinux-3.50-pre15
The SYSLINUX internal API closes a file automatically upon reading
to block EOF (not necessarily file EOF!) Thus, it's fairly likely
we'll get SI == 0 (closed file) passed to close_file at some point
or another.
Just plain admit it, and make close_file accept SI == 0 by spec.
Diffstat (limited to 'pxelinux.asm')
| -rw-r--r-- | pxelinux.asm | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/pxelinux.asm b/pxelinux.asm index 253aa0f1..3e50245f 100644 --- a/pxelinux.asm +++ b/pxelinux.asm @@ -1078,8 +1078,10 @@ memory_scan_for_pxenv_struct: ; side and send a courtesy ERROR packet to the server. ; close_file: + and si,si + jz .closed mov word [si],0 ; Not in use - ret +.closed: ret ; ; searchdir: |