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| author | Denys Vlasenko | 2017-08-04 14:28:16 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2017-08-04 14:28:16 +0200 |
| commit | 49e6bf2db92d896a71d08eb364069ba50fa82781 (patch) | |
| tree | b0940fde4d99a73e1a27c7ad0b610fe7e3f1be0c /NOFORK_NOEXEC.lst | |
| parent | 3346b4afc5c81d53eae4e7fc7e12ebd6fa573a4e (diff) | |
| download | busybox-49e6bf2db92d896a71d08eb364069ba50fa82781.zip busybox-49e6bf2db92d896a71d08eb364069ba50fa82781.tar.gz | |
sheel: improve comments on signal handling
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'NOFORK_NOEXEC.lst')
| -rw-r--r-- | NOFORK_NOEXEC.lst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/NOFORK_NOEXEC.lst b/NOFORK_NOEXEC.lst index 12ae1cd..14019bf 100644 --- a/NOFORK_NOEXEC.lst +++ b/NOFORK_NOEXEC.lst @@ -4,10 +4,12 @@ Why can't be NOFORK: interactive: may wait for user input, ^C has to work spawner: "tool PROG ARGS" which changes program's environment - must fork changes state: e.g. environment, signal handlers +alloc+xfunc: xmalloc, then xfunc - leaks memory if xfunc dies +open+xfunc: opens fd, then calls xfunc - fd is leaked if xfunc dies runner: sometimes may run for long(ish) time, and/or works with network: ^C has to work (cat BIGFILE, chmod -R, ftpget, nc) -"runners" can become eligible after hush is taught ^C to interrupt NOFORKs! +"runners" can become eligible after shell is taught ^C to interrupt NOFORKs! Why can't be NOEXEC: suid: runs under different uid - must fork+exec |