commit-graph: add 'verify' subcommand
If the commit-graph file becomes corrupt, we need a way to verify that its contents match the object database. In the manner of 'git fsck' we will implement a 'git commit-graph verify' subcommand to report all issues with the file. Add the 'verify' subcommand to the 'commit-graph' builtin and its documentation. The subcommand is currently a no-op except for loading the commit-graph into memory, which may trigger run-time errors that would be caught by normal use. Add a simple test that ensures the command returns a zero error code. If no commit-graph file exists, this is an acceptable state. Do not report any errors. Helped-by: Ramsay Jones <ramsay@ramsayjones.plus.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Junio C Hamano

parent
0cbef8f8ce
commit
283e68c72f
@ -827,3 +827,26 @@ void write_commit_graph(const char *obj_dir,
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oids.alloc = 0;
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oids.nr = 0;
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}
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static int verify_commit_graph_error;
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static void graph_report(const char *fmt, ...)
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{
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va_list ap;
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verify_commit_graph_error = 1;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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fprintf(stderr, "\n");
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va_end(ap);
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}
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int verify_commit_graph(struct repository *r, struct commit_graph *g)
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{
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if (!g) {
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graph_report("no commit-graph file loaded");
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return 1;
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}
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return verify_commit_graph_error;
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}
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