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unix_socket: add support for abstract unix domain socket

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In addition to unix domain sockets, Linux also supports an
abstract namespace which is independent of the filesystem.

In order to support it, add new CURLOPT_ABSTRACT_UNIX_SOCKET
option which uses the same storage as CURLOPT_UNIX_SOCKET_PATH
internally, along with a flag to specify abstract socket.

On non-supporting platforms, the abstract address will be
interpreted as an empty string and fail gracefully.

Also add new --abstract-unix-socket tool parameter.

Signed-off-by: Isaac Boukris <iboukris@gmail.com>
Reported-by: Chungtsun Li (typeless)
Reviewed-by: Daniel Stenberg
Reviewed-by: Peter Wu
Closes #1197
Fixes #1061
This commit is contained in:
Isaac Boukris 2017-01-09 00:51:08 +02:00 • committed by Peter Wu
parent a7c73ae309
commit 1d786faee1
17 changed files with 139 additions and 19 deletions
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3
include/curl/curl.h
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@ -1770,6 +1770,9 @@ typedef enum {
this option is used only if PROXY_SSL_VERIFYPEER is true */
CINIT(PROXY_PINNEDPUBLICKEY, STRINGPOINT, 263),
/* Path to an abstract Unix domain socket */
CINIT(ABSTRACT_UNIX_SOCKET, STRINGPOINT, 264),
CURLOPT_LASTENTRY /* the last unused */
} CURLoption;

3
include/curl/typecheck-gcc.h
View file

@ -219,7 +219,8 @@ _CURL_WARNING(_curl_easy_getinfo_err_curl_slist,
/* evaluates to true if option takes a char* argument */
#define _curl_is_string_option(option) \
((option) == CURLOPT_ACCEPT_ENCODING || \
((option) == CURLOPT_ABSTRACT_UNIX_SOCKET || \
(option) == CURLOPT_ACCEPT_ENCODING || \
(option) == CURLOPT_CAINFO || \
(option) == CURLOPT_CAPATH || \
(option) == CURLOPT_COOKIE || \