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restore default SIGPIPE handler in netexec child process.

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d33tah
2013-07-10 15:10:35 +00:00
parent 3b652c194d
commit 8520c1359e
1 changed files with 8 additions and 0 deletions
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8
ncat/ncat_posix.c
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@@ -180,6 +180,14 @@ void netexec(struct fdinfo *info, char *cmdexec)
close(child_stdin[1]);
close(child_stdout[0]);
/* We might have turned off SIGPIPE handling in ncat_listen.c. Since
the child process SIGPIPE might mean that the connection got broken,
ignoring it could result in an infinite loop if the code here
ignores the error codes of read()/write() calls. So, just in case,
let's restore SIGPIPE so that writing to a broken pipe results in
killing the child process. */
Signal(SIGPIPE, SIG_DFL);
/* rearrange stdin and stdout */
Dup2(child_stdin[0], STDIN_FILENO);
Dup2(child_stdout[1], STDOUT_FILENO);