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https://github.com/git/git
synced 2024-11-05 18:59:29 +00:00
d59f765ac9
Before sha1_to_hex_r() existed, a simple way to get hex sha1 into a buffer was with: strcpy(buf, sha1_to_hex(sha1)); This isn't wrong (assuming the buf is 41 characters), but it makes auditing the code base for bad strcpy() calls harder, as these become false positives. Let's convert them to sha1_to_hex_r(), and likewise for some calls to find_unique_abbrev(). While we're here, we'll double-check that all of the buffers are correctly sized, and use the more obvious GIT_SHA1_HEXSZ constant. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
110 lines
2.2 KiB
C
110 lines
2.2 KiB
C
#include "builtin.h"
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#include "run-command.h"
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static const char *pgm;
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static int one_shot, quiet;
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static int err;
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static int merge_entry(int pos, const char *path)
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{
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int found;
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const char *arguments[] = { pgm, "", "", "", path, "", "", "", NULL };
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char hexbuf[4][GIT_SHA1_HEXSZ + 1];
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char ownbuf[4][60];
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if (pos >= active_nr)
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die("git merge-index: %s not in the cache", path);
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found = 0;
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do {
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const struct cache_entry *ce = active_cache[pos];
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int stage = ce_stage(ce);
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if (strcmp(ce->name, path))
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break;
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found++;
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sha1_to_hex_r(hexbuf[stage], ce->sha1);
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xsnprintf(ownbuf[stage], sizeof(ownbuf[stage]), "%o", ce->ce_mode);
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arguments[stage] = hexbuf[stage];
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arguments[stage + 4] = ownbuf[stage];
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} while (++pos < active_nr);
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if (!found)
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die("git merge-index: %s not in the cache", path);
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if (run_command_v_opt(arguments, 0)) {
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if (one_shot)
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err++;
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else {
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if (!quiet)
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die("merge program failed");
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exit(1);
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}
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}
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return found;
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}
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static void merge_one_path(const char *path)
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{
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int pos = cache_name_pos(path, strlen(path));
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/*
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* If it already exists in the cache as stage0, it's
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* already merged and there is nothing to do.
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*/
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if (pos < 0)
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merge_entry(-pos-1, path);
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}
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static void merge_all(void)
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{
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int i;
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for (i = 0; i < active_nr; i++) {
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const struct cache_entry *ce = active_cache[i];
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if (!ce_stage(ce))
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continue;
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i += merge_entry(i, ce->name)-1;
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}
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}
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int cmd_merge_index(int argc, const char **argv, const char *prefix)
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{
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int i, force_file = 0;
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/* Without this we cannot rely on waitpid() to tell
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* what happened to our children.
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*/
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signal(SIGCHLD, SIG_DFL);
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if (argc < 3)
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usage("git merge-index [-o] [-q] <merge-program> (-a | [--] [<filename>...])");
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read_cache();
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i = 1;
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if (!strcmp(argv[i], "-o")) {
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one_shot = 1;
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i++;
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}
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if (!strcmp(argv[i], "-q")) {
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quiet = 1;
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i++;
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}
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pgm = argv[i++];
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for (; i < argc; i++) {
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const char *arg = argv[i];
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if (!force_file && *arg == '-') {
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if (!strcmp(arg, "--")) {
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force_file = 1;
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continue;
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}
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if (!strcmp(arg, "-a")) {
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merge_all();
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continue;
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}
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die("git merge-index: unknown option %s", arg);
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}
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merge_one_path(arg);
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}
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if (err && !quiet)
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die("merge program failed");
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return err;
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}
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