06ba9d03e3
Create a test-tool helper to create the server side of a windows named pipe, wait for a client connection, and copy data written to the pipe to stdout. Create t0051 test to route GIT_TRACE output of a command to a named pipe using the above test-tool helper. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
#include "test-tool.h"
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#include "git-compat-util.h"
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#include "strbuf.h"
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#ifdef GIT_WINDOWS_NATIVE
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static const char *usage_string = "<pipe-filename>";
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#define TEST_BUFSIZE (4096)
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int cmd__windows_named_pipe(int argc, const char **argv)
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{
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const char *filename;
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struct strbuf pathname = STRBUF_INIT;
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int err;
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HANDLE h;
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BOOL connected;
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char buf[TEST_BUFSIZE + 1];
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if (argc < 2)
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goto print_usage;
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filename = argv[1];
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if (strchr(filename, '/') || strchr(filename, '\\'))
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goto print_usage;
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strbuf_addf(&pathname, "//./pipe/%s", filename);
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/*
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* Create a single instance of the server side of the named pipe.
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* This will allow exactly one client instance to connect to it.
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*/
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h = CreateNamedPipeA(
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pathname.buf,
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PIPE_ACCESS_INBOUND | FILE_FLAG_FIRST_PIPE_INSTANCE,
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PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_WAIT,
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PIPE_UNLIMITED_INSTANCES,
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TEST_BUFSIZE, TEST_BUFSIZE, 0, NULL);
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if (h == INVALID_HANDLE_VALUE) {
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err = err_win_to_posix(GetLastError());
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fprintf(stderr, "CreateNamedPipe failed: %s\n",
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strerror(err));
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return err;
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}
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connected = ConnectNamedPipe(h, NULL)
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? TRUE
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: (GetLastError() == ERROR_PIPE_CONNECTED);
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if (!connected) {
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err = err_win_to_posix(GetLastError());
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fprintf(stderr, "ConnectNamedPipe failed: %s\n",
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strerror(err));
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CloseHandle(h);
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return err;
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}
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while (1) {
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DWORD nbr;
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BOOL success = ReadFile(h, buf, TEST_BUFSIZE, &nbr, NULL);
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if (!success || nbr == 0)
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break;
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buf[nbr] = 0;
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write(1, buf, nbr);
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}
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DisconnectNamedPipe(h);
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CloseHandle(h);
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return 0;
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print_usage:
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fprintf(stderr, "usage: %s %s\n", argv[0], usage_string);
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return 1;
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}
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#endif
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