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| author | Barton E. Schaefer <schaefer@zsh.org> | 2013-10-27 15:42:00 -0700 |
|---|---|---|
| committer | Barton E. Schaefer <schaefer@zsh.org> | 2013-10-27 15:42:00 -0700 |
| commit | c98cbe25d2be2c8c552250e7e039a72e1f61887b (patch) | |
| tree | f90413329d54c3627baac925951e5d2b0bcc08cd /Src/exec.c | |
| parent | 4748eff7d2e97ff652f5d75d33b9aad12d7d917f (diff) | |
| download | zsh-c98cbe25d2be2c8c552250e7e039a72e1f61887b.tar.gz zsh-c98cbe25d2be2c8c552250e7e039a72e1f61887b.zip | |
31919: fix deadlock when a shell builtin with a multio redirection is used on the left side of a pipeline
Make sure stdin/out/err file descriptors are closed for the multio copy
process, which means not re-using those descriptors after they are closed
and marked FDT_UNUSED in fdtable[]. For completeness, initialize their
fdtable[] state to FDT_EXTERNAL.
Diffstat (limited to 'Src/exec.c')
| -rw-r--r-- | Src/exec.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Src/exec.c b/Src/exec.c index 99c7eaa6a..df915e152 100644 --- a/Src/exec.c +++ b/Src/exec.c @@ -3123,7 +3123,7 @@ execcmd(Estate state, int input, int output, int how, int last1) int fd = fn->fd2; if(fd == -2) fd = (fn->type == REDIR_MERGEOUT) ? coprocout : coprocin; - fil = dup(fd); + fil = movefd(dup(fd)); } if (fil == -1) { char fdstr[4]; @@ -3151,7 +3151,7 @@ execcmd(Estate state, int input, int output, int how, int last1) else fil = clobber_open(fn); if(fil != -1 && IS_ERROR_REDIR(fn->type)) - dfil = dup(fil); + dfil = movefd(dup(fil)); else dfil = 0; if (fil == -1 || dfil == -1) { |