f4609b896f
This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because there is some breakage in the git build related to the netrc credentials helper which someone has taken care of in nixpkgs. The stable channel is not used for anything other than git, so this should be fine. Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
#include "cache.h"
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#include "exec-cmd.h"
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#include "attr.h"
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/*
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* Many parts of Git have subprograms communicate via pipe, expect the
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* upstream of a pipe to die with SIGPIPE when the downstream of a
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* pipe does not need to read all that is written. Some third-party
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* programs that ignore or block SIGPIPE for their own reason forget
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* to restore SIGPIPE handling to the default before spawning Git and
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* break this carefully orchestrated machinery.
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*
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* Restore the way SIGPIPE is handled to default, which is what we
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* expect.
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*/
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static void restore_sigpipe_to_default(void)
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{
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sigset_t unblock;
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sigemptyset(&unblock);
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sigaddset(&unblock, SIGPIPE);
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sigprocmask(SIG_UNBLOCK, &unblock, NULL);
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signal(SIGPIPE, SIG_DFL);
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}
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int main(int argc, const char **argv)
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{
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int result;
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trace2_initialize_clock();
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/*
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* Always open file descriptors 0/1/2 to avoid clobbering files
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* in die(). It also avoids messing up when the pipes are dup'ed
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* onto stdin/stdout/stderr in the child processes we spawn.
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*/
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sanitize_stdfds();
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restore_sigpipe_to_default();
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git_resolve_executable_dir(argv[0]);
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git_setup_gettext();
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initialize_the_repository();
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attr_start();
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trace2_initialize();
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trace2_cmd_start(argv);
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trace2_collect_process_info(TRACE2_PROCESS_INFO_STARTUP);
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result = cmd_main(argc, argv);
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trace2_cmd_exit(result);
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return result;
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}
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