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| author | Peter Stephenson <p.stephenson@samsung.com> | 2019-07-02 13:42:53 +0100 |
|---|---|---|
| committer | Peter Stephenson <p.stephenson@samsung.com> | 2019-07-02 13:42:53 +0100 |
| commit | 3bdf4d6641fb34d1c2f130abddb847169a793afe (patch) | |
| tree | b1c3686749a26212f08bfd8ffea464804f308d86 /Doc/Zsh | |
| parent | 700ec49581650ea1f0bffacb207a30145e278417 (diff) | |
| download | zsh-3bdf4d6641fb34d1c2f130abddb847169a793afe.tar.gz zsh-3bdf4d6641fb34d1c2f130abddb847169a793afe.tar.xz zsh-3bdf4d6641fb34d1c2f130abddb847169a793afe.zip | |
44480: Don't automatically close externally visible file descroptors.
These are descriptors marked FDT_EXTERNAL. Make all sysopen'ed file descriptors FDT_EXTERNAL. Make =(...) call closem() consistent with other substitutions. Document file descriptors are left open.
Diffstat (limited to 'Doc/Zsh')
| -rw-r--r-- | Doc/Zsh/mod_socket.yo | 6 | ||||
| -rw-r--r-- | Doc/Zsh/mod_system.yo | 4 | ||||
| -rw-r--r-- | Doc/Zsh/redirect.yo | 3 |
3 files changed, 9 insertions, 4 deletions
diff --git a/Doc/Zsh/mod_socket.yo b/Doc/Zsh/mod_socket.yo index 867f6081f..78d9254e8 100644 --- a/Doc/Zsh/mod_socket.yo +++ b/Doc/Zsh/mod_socket.yo @@ -43,7 +43,8 @@ startitem() item(tt(zsocket) tt(-l) [ tt(-v) ] [ tt(-d) var(fd) ] var(filename))( tt(zsocket -l) will open a socket listening on var(filename). The shell parameter tt(REPLY) will be set to the file descriptor -associated with that listener. +associated with that listener. The file descriptor remains open in subshells +and forked external executables. If tt(-d) is specified, its argument will be taken as the target file descriptor for @@ -56,7 +57,8 @@ tt(zsocket -a) will accept an incoming connection to the socket associated with var(listenfd). The shell parameter tt(REPLY) will be set to the file descriptor associated with -the inbound connection. +the inbound connection. The file descriptor remains open in subshells +and forked external executables. If tt(-d) is specified, its argument will be taken as the target file descriptor for the diff --git a/Doc/Zsh/mod_system.yo b/Doc/Zsh/mod_system.yo index 3a85e760f..6292af071 100644 --- a/Doc/Zsh/mod_system.yo +++ b/Doc/Zsh/mod_system.yo @@ -45,7 +45,9 @@ specified as a comma-separated list. The following is a list of possible options. Note that, depending on the system, some may not be available. startitem() item(tt(cloexec))( -mark file to be closed when other programs are executed +mark file to be closed when other programs are executed (else +the file descriptor remains open in subshells and forked external +executables) ) xitem(tt(create)) item(tt(creat))( diff --git a/Doc/Zsh/redirect.yo b/Doc/Zsh/redirect.yo index 7e38cd0c3..13496d8d3 100644 --- a/Doc/Zsh/redirect.yo +++ b/Doc/Zsh/redirect.yo @@ -182,7 +182,8 @@ indent(... tt({myfd}>&1)) This opens a new file descriptor that is a duplicate of file descriptor 1 and sets the parameter tt(myfd) to the number of the file descriptor, which will be at least 10. The new file descriptor can be written to using -the syntax tt(>&$myfd). +the syntax tt(>&$myfd). The file descriptor remains open in subshells +and forked external executables. The syntax tt({)var(varid)tt(}>&-), for example tt({myfd}>&-), may be used to close a file descriptor opened in this fashion. Note that the |