diff options
| author | Lauri Aarnio <Lauri.Aarnio@iki.fi> | 2008-10-29 00:54:15 +0200 |
|---|---|---|
| committer | Lauri Leukkunen <lle@rahina.org> | 2008-11-02 18:59:55 +0200 |
| commit | 3a51c776ff15fcc89be17f51f9109862ed4ea09f (patch) | |
| tree | 8d34b3e348fa8ebe3f052ff1936192700524c9bd /preload | |
| parent | a7357a2051b7d0835f5dc00153a084846d06df43 (diff) | |
Bugfix: inspect_binary() crashed when the file was empty - min.size of an executable is now 4 bytes. Smaller files are rejected. - sb2-show: better diagnostics, if "sb2-show exec" fails.
Diffstat (limited to 'preload')
| -rw-r--r-- | preload/sb_exec.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/preload/sb_exec.c b/preload/sb_exec.c index bee8e97..80084fe 100644 --- a/preload/sb_exec.c +++ b/preload/sb_exec.c @@ -371,6 +371,14 @@ static enum binary_type inspect_binary(const char *filename) goto _out_close; } + if (status.st_size < 4) { + SB_LOG(SB_LOGLEVEL_DEBUG, + "File size is too small, can't exec (%s)", filename); + errno = ENOEXEC; + retval = BIN_NONE; + goto _out_close; + } + region = mmap(0, status.st_size, PROT_READ, MAP_PRIVATE, fd, 0); if (!region) { goto _out_close; |