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b333d0d6f4
Now the last caller of this function is gone, and new ones are unlikely to appear, because this function is doing very little that a regular if() does not besides obfuscating the error message (and if we ever did want something like it, we would probably prefer the function to come back with more "normal" return value semantics). Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
96 lines
2 KiB
C
96 lines
2 KiB
C
#include "cache.h"
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#include "run-command.h"
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static void check_pipe(int err)
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{
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if (err == EPIPE) {
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if (in_async())
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async_exit(141);
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signal(SIGPIPE, SIG_DFL);
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raise(SIGPIPE);
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/* Should never happen, but just in case... */
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exit(141);
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}
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}
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/*
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* Some cases use stdio, but want to flush after the write
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* to get error handling (and to get better interactive
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* behaviour - not buffering excessively).
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*
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* Of course, if the flush happened within the write itself,
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* we've already lost the error code, and cannot report it any
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* more. So we just ignore that case instead (and hope we get
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* the right error code on the flush).
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*
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* If the file handle is stdout, and stdout is a file, then skip the
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* flush entirely since it's not needed.
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*/
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void maybe_flush_or_die(FILE *f, const char *desc)
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{
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static int skip_stdout_flush = -1;
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struct stat st;
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char *cp;
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if (f == stdout) {
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if (skip_stdout_flush < 0) {
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cp = getenv("GIT_FLUSH");
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if (cp)
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skip_stdout_flush = (atoi(cp) == 0);
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else if ((fstat(fileno(stdout), &st) == 0) &&
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S_ISREG(st.st_mode))
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skip_stdout_flush = 1;
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else
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skip_stdout_flush = 0;
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}
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if (skip_stdout_flush && !ferror(f))
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return;
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}
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if (fflush(f)) {
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check_pipe(errno);
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die_errno("write failure on '%s'", desc);
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}
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}
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void fprintf_or_die(FILE *f, const char *fmt, ...)
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{
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va_list ap;
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int ret;
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va_start(ap, fmt);
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ret = vfprintf(f, fmt, ap);
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va_end(ap);
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if (ret < 0) {
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check_pipe(errno);
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die_errno("write error");
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}
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}
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void fsync_or_die(int fd, const char *msg)
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{
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if (fsync(fd) < 0) {
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die_errno("fsync error on '%s'", msg);
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}
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}
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void write_or_die(int fd, const void *buf, size_t count)
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{
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if (write_in_full(fd, buf, count) < 0) {
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check_pipe(errno);
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die_errno("write error");
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}
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}
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int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg)
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{
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if (write_in_full(fd, buf, count) < 0) {
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check_pipe(errno);
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fprintf(stderr, "%s: write error (%s)\n",
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msg, strerror(errno));
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return 0;
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}
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return 1;
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}
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