diff options
Diffstat (limited to 'rerere.c')
| -rw-r--r-- | rerere.c | 51 |
1 files changed, 38 insertions, 13 deletions
@@ -70,6 +70,19 @@ static int write_rr(struct string_list *rr, int out_fd) return 0; } +static void ferr_write(const void *p, size_t count, FILE *fp, int *err) +{ + if (!count || *err) + return; + if (fwrite(p, count, 1, fp) != 1) + *err = errno; +} + +static inline void ferr_puts(const char *s, FILE *fp, int *err) +{ + ferr_write(s, strlen(s), fp, err); +} + static int handle_file(const char *path, unsigned char *sha1, const char *output) { @@ -82,6 +95,7 @@ static int handle_file(const char *path, struct strbuf one = STRBUF_INIT, two = STRBUF_INIT; FILE *f = fopen(path, "r"); FILE *out = NULL; + int wrerror = 0; if (!f) return error("Could not open %s", path); @@ -118,11 +132,11 @@ static int handle_file(const char *path, hunk_no++; hunk = RR_CONTEXT; if (out) { - fputs("<<<<<<<\n", out); - fwrite(one.buf, one.len, 1, out); - fputs("=======\n", out); - fwrite(two.buf, two.len, 1, out); - fputs(">>>>>>>\n", out); + ferr_puts("<<<<<<<\n", out, &wrerror); + ferr_write(one.buf, one.len, out, &wrerror); + ferr_puts("=======\n", out, &wrerror); + ferr_write(two.buf, two.len, out, &wrerror); + ferr_puts(">>>>>>>\n", out, &wrerror); } if (sha1) { git_SHA1_Update(&ctx, one.buf ? one.buf : "", @@ -139,7 +153,7 @@ static int handle_file(const char *path, else if (hunk == RR_SIDE_2) strbuf_addstr(&two, buf); else if (out) - fputs(buf, out); + ferr_puts(buf, out, &wrerror); continue; bad: hunk = 99; /* force error exit */ @@ -149,8 +163,12 @@ static int handle_file(const char *path, strbuf_release(&two); fclose(f); - if (out) - fclose(out); + if (wrerror) + error("There were errors while writing %s (%s)", + path, strerror(wrerror)); + if (out && fclose(out)) + wrerror = error("Failed to flush %s: %s", + path, strerror(errno)); if (sha1) git_SHA1_Final(sha1, &ctx); if (hunk != RR_CONTEXT) { @@ -158,6 +176,8 @@ static int handle_file(const char *path, unlink(output); return error("Could not parse conflict hunks in %s", path); } + if (wrerror) + return -1; return hunk_no; } @@ -200,9 +220,13 @@ static int merge(const char *name, const char *path) if (!ret) { FILE *f = fopen(path, "w"); if (!f) - return error("Could not write to %s", path); - fwrite(result.ptr, result.size, 1, f); - fclose(f); + return error("Could not open %s: %s", path, + strerror(errno)); + if (fwrite(result.ptr, result.size, 1, f) != 1) + error("Could not write %s: %s", path, strerror(errno)); + if (fclose(f)) + return error("Writing %s failed: %s", path, + strerror(errno)); } free(cur.ptr); @@ -351,8 +375,9 @@ int setup_rerere(struct string_list *merge_rr) if (!is_rerere_enabled()) return -1; - merge_rr_path = xstrdup(git_path("MERGE_RR")); - fd = hold_lock_file_for_update(&write_lock, merge_rr_path, 1); + merge_rr_path = git_pathdup("MERGE_RR"); + fd = hold_lock_file_for_update(&write_lock, merge_rr_path, + LOCK_DIE_ON_ERROR); read_rr(merge_rr); return fd; } |