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| author | Peter Stephenson <pws@users.sourceforge.net> | 2013-03-10 21:45:04 +0000 |
|---|---|---|
| committer | Peter Stephenson <pws@users.sourceforge.net> | 2013-03-10 21:45:04 +0000 |
| commit | fb3ad98f71861c9676c972e00e7c76879ec17e41 (patch) | |
| tree | 822327749fcec33888d4aaa90ba43c523c13edeb /Src/exec.c | |
| parent | 44907223ff14d424dbfcec4871e41053a07a1dc7 (diff) | |
| download | zsh-fb3ad98f71861c9676c972e00e7c76879ec17e41.tar.gz zsh-fb3ad98f71861c9676c972e00e7c76879ec17e41.tar.xz zsh-fb3ad98f71861c9676c972e00e7c76879ec17e41.zip | |
31141: Tighten NO_CLOBBER restrictions on {fd} syntax
to apply only if $fd is exactly an fd and nothing else.
Diffstat (limited to 'Src/exec.c')
| -rw-r--r-- | Src/exec.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Src/exec.c b/Src/exec.c index 1ecbc3967..fa148756b 100644 --- a/Src/exec.c +++ b/Src/exec.c @@ -1885,7 +1885,14 @@ checkclobberparam(struct redir *f) return 0; } - if (!isset(CLOBBER) && (fd = (int)getintvalue(v)) && + /* + * We can't clobber the value in the parameter if it's + * already an opened file descriptor --- that means it's a decimal + * integer corresponding to an opened file descriptor, + * not merely an expression that evaluates to a file descriptor. + */ + if (!isset(CLOBBER) && (s = getstrvalue(v)) && + (fd = (int)zstrtol(s, &s, 10)) >= 0 && !*s && fd <= max_zsh_fd && fdtable[fd] == FDT_EXTERNAL) { zwarn("can't clobber parameter %s containing file descriptor %d", f->varid, fd); |