From e08140568a131bcd26e64a0bc8188040847be998 Mon Sep 17 00:00:00 2001 From: Andy Whitcroft Date: Mon, 8 Jan 2007 15:57:52 +0000 Subject: [PATCH] short i/o: clean up the naming for the write_{in,or}_xxx family We recently introduced a write_in_full() which would either write the specified object or emit an error message and fail. In order to fix the read side we now want to introduce a read_in_full() but without an error emit. This patch cleans up the naming of this family of calls: 1) convert the existing write_or_whine() to write_or_whine_pipe() to better indicate its pipe specific nature, 2) convert the existing write_in_full() calls to write_or_whine() to better indicate its nature, 3) introduce a write_in_full() providing a write or fail semantic, and 4) convert write_or_whine() and write_or_whine_pipe() to use write_in_full(). Signed-off-by: Andy Whitcroft Signed-off-by: Junio C Hamano --- cache.h | 3 ++- send-pack.c | 4 +-- trace.c | 4 +-- write_or_die.c | 72 +++++++++++++++++++++++++++++--------------------- 4 files changed, 48 insertions(+), 35 deletions(-) diff --git a/cache.h b/cache.h index 36be64e38..38a20a806 100644 --- a/cache.h +++ b/cache.h @@ -433,9 +433,10 @@ extern char *git_log_output_encoding; extern int copy_fd(int ifd, int ofd); extern void read_or_die(int fd, void *buf, size_t count); -extern int write_in_full(int fd, const void *buf, size_t count, const char *); +extern int write_in_full(int fd, const void *buf, size_t count); extern void write_or_die(int fd, const void *buf, size_t count); extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg); +extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg); /* pager.c */ extern void setup_pager(void); diff --git a/send-pack.c b/send-pack.c index c195d080d..6756264b2 100644 --- a/send-pack.c +++ b/send-pack.c @@ -65,14 +65,14 @@ static int pack_objects(int fd, struct ref *refs) memcpy(buf + 1, sha1_to_hex(refs->old_sha1), 40); buf[0] = '^'; buf[41] = '\n'; - if (!write_in_full(pipe_fd[1], buf, 42, + if (!write_or_whine(pipe_fd[1], buf, 42, "send-pack: send refs")) break; } if (!is_null_sha1(refs->new_sha1)) { memcpy(buf, sha1_to_hex(refs->new_sha1), 40); buf[40] = '\n'; - if (!write_in_full(pipe_fd[1], buf, 41, + if (!write_or_whine(pipe_fd[1], buf, 41, "send-pack: send refs")) break; } diff --git a/trace.c b/trace.c index 495e5ed92..27fef868c 100644 --- a/trace.c +++ b/trace.c @@ -101,7 +101,7 @@ void trace_printf(const char *format, ...) nfvasprintf(&trace_str, format, rest); va_end(rest); - write_or_whine(fd, trace_str, strlen(trace_str), err_msg); + write_or_whine_pipe(fd, trace_str, strlen(trace_str), err_msg); free(trace_str); @@ -139,7 +139,7 @@ void trace_argv_printf(const char **argv, int count, const char *format, ...) strncpy(trace_str + format_len, argv_str, argv_len); strcpy(trace_str + trace_len - 1, "\n"); - write_or_whine(fd, trace_str, trace_len, err_msg); + write_or_whine_pipe(fd, trace_str, trace_len, err_msg); free(argv_str); free(format_str); diff --git a/write_or_die.c b/write_or_die.c index 6db1d3123..613c0c3f6 100644 --- a/write_or_die.c +++ b/write_or_die.c @@ -35,49 +35,61 @@ void write_or_die(int fd, const void *buf, size_t count) } } -int write_or_whine(int fd, const void *buf, size_t count, const char *msg) +int write_in_full(int fd, const void *buf, size_t count) { const char *p = buf; - ssize_t written; + ssize_t total = 0; + ssize_t wcount = 0; while (count > 0) { - written = xwrite(fd, p, count); - if (written == 0) { - fprintf(stderr, "%s: disk full?\n", msg); - return 0; - } - else if (written < 0) { - if (errno == EPIPE) - exit(0); - fprintf(stderr, "%s: write error (%s)\n", - msg, strerror(errno)); - return 0; + wcount = xwrite(fd, p, count); + if (wcount <= 0) { + if (total) + return total; + else + return wcount; } - count -= written; - p += written; + count -= wcount; + p += wcount; + total += wcount; + } + + return wcount; +} + +int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg) +{ + ssize_t written; + + written = write_in_full(fd, buf, count); + if (written == 0) { + fprintf(stderr, "%s: disk full?\n", msg); + return 0; + } + else if (written < 0) { + if (errno == EPIPE) + exit(0); + fprintf(stderr, "%s: write error (%s)\n", + msg, strerror(errno)); + return 0; } return 1; } -int write_in_full(int fd, const void *buf, size_t count, const char *msg) +int write_or_whine(int fd, const void *buf, size_t count, const char *msg) { - const char *p = buf; ssize_t written; - while (count > 0) { - written = xwrite(fd, p, count); - if (written == 0) { - fprintf(stderr, "%s: disk full?\n", msg); - return 0; - } - else if (written < 0) { - fprintf(stderr, "%s: write error (%s)\n", - msg, strerror(errno)); - return 0; - } - count -= written; - p += written; + written = write_in_full(fd, buf, count); + if (written == 0) { + fprintf(stderr, "%s: disk full?\n", msg); + return 0; + } + else if (written < 0) { + fprintf(stderr, "%s: write error (%s)\n", + msg, strerror(errno)); + return 0; } return 1; -- 2.30.2