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revert(3p/git): Revert merge of git upstream at v2.26.2

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This causes cgit to serve error pages, which is undesirable.

This reverts commit 5229c9b232, reversing
changes made to f2b211131f.
This commit is contained in:
Vincent Ambo 2020-05-26 00:06:52 +01:00
parent 6f8fbf4aa4
commit 93ba78d6f4
1006 changed files with 60537 additions and 148724 deletions
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174
third_party/git/fsmonitor.c vendored
View file

@ -6,42 +6,19 @@
#include "run-command.h"
#include "strbuf.h"
#define INDEX_EXTENSION_VERSION1 (1)
#define INDEX_EXTENSION_VERSION2 (2)
#define HOOK_INTERFACE_VERSION1 (1)
#define HOOK_INTERFACE_VERSION2 (2)
#define INDEX_EXTENSION_VERSION (1)
#define HOOK_INTERFACE_VERSION (1)
struct trace_key trace_fsmonitor = TRACE_KEY_INIT(FSMONITOR);
static void fsmonitor_ewah_callback(size_t pos, void *is)
{
struct index_state *istate = (struct index_state *)is;
struct cache_entry *ce;
struct cache_entry *ce = istate->cache[pos];
if (pos >= istate->cache_nr)
BUG("fsmonitor_dirty has more entries than the index (%"PRIuMAX" >= %u)",
(uintmax_t)pos, istate->cache_nr);
ce = istate->cache[pos];
ce->ce_flags &= ~CE_FSMONITOR_VALID;
}
static int fsmonitor_hook_version(void)
{
int hook_version;
if (git_config_get_int("core.fsmonitorhookversion", &hook_version))
return -1;
if (hook_version == HOOK_INTERFACE_VERSION1 ||
hook_version == HOOK_INTERFACE_VERSION2)
return hook_version;
warning("Invalid hook version '%i' in core.fsmonitorhookversion. "
"Must be 1 or 2.", hook_version);
return -1;
}
int read_fsmonitor_extension(struct index_state *istate, const void *data,
unsigned long sz)
{
@ -50,26 +27,17 @@ int read_fsmonitor_extension(struct index_state *istate, const void *data,
uint32_t ewah_size;
struct ewah_bitmap *fsmonitor_dirty;
int ret;
uint64_t timestamp;
struct strbuf last_update = STRBUF_INIT;
if (sz < sizeof(uint32_t) + 1 + sizeof(uint32_t))
if (sz < sizeof(uint32_t) + sizeof(uint64_t) + sizeof(uint32_t))
return error("corrupt fsmonitor extension (too short)");
hdr_version = get_be32(index);
index += sizeof(uint32_t);
if (hdr_version == INDEX_EXTENSION_VERSION1) {
timestamp = get_be64(index);
strbuf_addf(&last_update, "%"PRIu64"", timestamp);
index += sizeof(uint64_t);
} else if (hdr_version == INDEX_EXTENSION_VERSION2) {
strbuf_addstr(&last_update, index);
index += last_update.len + 1;
} else {
if (hdr_version != INDEX_EXTENSION_VERSION)
return error("bad fsmonitor version %d", hdr_version);
}
istate->fsmonitor_last_update = strbuf_detach(&last_update, NULL);
istate->fsmonitor_last_update = get_be64(index);
index += sizeof(uint64_t);
ewah_size = get_be32(index);
index += sizeof(uint32_t);
@ -82,45 +50,32 @@ int read_fsmonitor_extension(struct index_state *istate, const void *data,
}
istate->fsmonitor_dirty = fsmonitor_dirty;
if (!istate->split_index &&
istate->fsmonitor_dirty->bit_size > istate->cache_nr)
BUG("fsmonitor_dirty has more entries than the index (%"PRIuMAX" > %u)",
(uintmax_t)istate->fsmonitor_dirty->bit_size, istate->cache_nr);
trace_printf_key(&trace_fsmonitor, "read fsmonitor extension successful");
return 0;
}
void fill_fsmonitor_bitmap(struct index_state *istate)
{
unsigned int i, skipped = 0;
unsigned int i;
istate->fsmonitor_dirty = ewah_new();
for (i = 0; i < istate->cache_nr; i++) {
if (istate->cache[i]->ce_flags & CE_REMOVE)
skipped++;
else if (!(istate->cache[i]->ce_flags & CE_FSMONITOR_VALID))
ewah_set(istate->fsmonitor_dirty, i - skipped);
}
for (i = 0; i < istate->cache_nr; i++)
if (!(istate->cache[i]->ce_flags & CE_FSMONITOR_VALID))
ewah_set(istate->fsmonitor_dirty, i);
}
void write_fsmonitor_extension(struct strbuf *sb, struct index_state *istate)
{
uint32_t hdr_version;
uint64_t tm;
uint32_t ewah_start;
uint32_t ewah_size = 0;
int fixup = 0;
if (!istate->split_index &&
istate->fsmonitor_dirty->bit_size > istate->cache_nr)
BUG("fsmonitor_dirty has more entries than the index (%"PRIuMAX" > %u)",
(uintmax_t)istate->fsmonitor_dirty->bit_size, istate->cache_nr);
put_be32(&hdr_version, INDEX_EXTENSION_VERSION2);
put_be32(&hdr_version, INDEX_EXTENSION_VERSION);
strbuf_add(sb, &hdr_version, sizeof(uint32_t));
strbuf_addstr(sb, istate->fsmonitor_last_update);
strbuf_addch(sb, 0); /* Want to keep a NUL */
put_be64(&tm, istate->fsmonitor_last_update);
strbuf_add(sb, &tm, sizeof(uint64_t));
fixup = sb->len;
strbuf_add(sb, &ewah_size, sizeof(uint32_t)); /* we'll fix this up later */
@ -137,9 +92,9 @@ void write_fsmonitor_extension(struct strbuf *sb, struct index_state *istate)
}
/*
* Call the query-fsmonitor hook passing the last update token of the saved results.
* Call the query-fsmonitor hook passing the time of the last saved results.
*/
static int query_fsmonitor(int version, const char *last_update, struct strbuf *query_result)
static int query_fsmonitor(int version, uint64_t last_update, struct strbuf *query_result)
{
struct child_process cp = CHILD_PROCESS_INIT;
@ -148,7 +103,7 @@ static int query_fsmonitor(int version, const char *last_update, struct strbuf *
argv_array_push(&cp.args, core_fsmonitor);
argv_array_pushf(&cp.args, "%d", version);
argv_array_pushf(&cp.args, "%s", last_update);
argv_array_pushf(&cp.args, "%" PRIuMAX, (uintmax_t)last_update);
cp.use_shell = 1;
cp.dir = get_git_work_tree();
@ -175,18 +130,14 @@ static void fsmonitor_refresh_callback(struct index_state *istate, const char *n
void refresh_fsmonitor(struct index_state *istate)
{
struct strbuf query_result = STRBUF_INIT;
int query_success = 0, hook_version = -1;
size_t bol = 0; /* beginning of line */
int query_success = 0;
size_t bol; /* beginning of line */
uint64_t last_update;
struct strbuf last_update_token = STRBUF_INIT;
char *buf;
unsigned int i;
if (!core_fsmonitor || istate->fsmonitor_has_run_once)
return;
hook_version = fsmonitor_hook_version();
istate->fsmonitor_has_run_once = 1;
trace_printf_key(&trace_fsmonitor, "refresh fsmonitor");
@ -195,60 +146,26 @@ void refresh_fsmonitor(struct index_state *istate)
* should be inclusive to ensure we don't miss potential changes.
*/
last_update = getnanotime();
if (hook_version == HOOK_INTERFACE_VERSION1)
strbuf_addf(&last_update_token, "%"PRIu64"", last_update);
/*
* If we have a last update token, call query_fsmonitor for the set of
* changes since that token, else assume everything is possibly dirty
* If we have a last update time, call query_fsmonitor for the set of
* changes since that time, else assume everything is possibly dirty
* and check it all.
*/
if (istate->fsmonitor_last_update) {
if (hook_version == -1 || hook_version == HOOK_INTERFACE_VERSION2) {
query_success = !query_fsmonitor(HOOK_INTERFACE_VERSION2,
istate->fsmonitor_last_update, &query_result);
if (query_success) {
if (hook_version < 0)
hook_version = HOOK_INTERFACE_VERSION2;
/*
* First entry will be the last update token
* Need to use a char * variable because static
* analysis was suggesting to use strbuf_addbuf
* but we don't want to copy the entire strbuf
* only the the chars up to the first NUL
*/
buf = query_result.buf;
strbuf_addstr(&last_update_token, buf);
if (!last_update_token.len) {
warning("Empty last update token.");
query_success = 0;
} else {
bol = last_update_token.len + 1;
}
} else if (hook_version < 0) {
hook_version = HOOK_INTERFACE_VERSION1;
if (!last_update_token.len)
strbuf_addf(&last_update_token, "%"PRIu64"", last_update);
}
}
if (hook_version == HOOK_INTERFACE_VERSION1) {
query_success = !query_fsmonitor(HOOK_INTERFACE_VERSION1,
istate->fsmonitor_last_update, &query_result);
}
query_success = !query_fsmonitor(HOOK_INTERFACE_VERSION,
istate->fsmonitor_last_update, &query_result);
trace_performance_since(last_update, "fsmonitor process '%s'", core_fsmonitor);
trace_printf_key(&trace_fsmonitor, "fsmonitor process '%s' returned %s",
core_fsmonitor, query_success ? "success" : "failure");
}
/* a fsmonitor process can return '/' to indicate all entries are invalid */
if (query_success && query_result.buf[bol] != '/') {
if (query_success && query_result.buf[0] != '/') {
/* Mark all entries returned by the monitor as dirty */
buf = query_result.buf;
for (i = bol; i < query_result.len; i++) {
bol = 0;
for (i = 0; i < query_result.len; i++) {
if (buf[i] != '\0')
continue;
fsmonitor_refresh_callback(istate, buf + bol);
@ -256,47 +173,31 @@ void refresh_fsmonitor(struct index_state *istate)
}
if (bol < query_result.len)
fsmonitor_refresh_callback(istate, buf + bol);
/* Now mark the untracked cache for fsmonitor usage */
if (istate->untracked)
istate->untracked->use_fsmonitor = 1;
} else {
/* We only want to run the post index changed hook if we've actually changed entries, so keep track
* if we actually changed entries or not */
int is_cache_changed = 0;
/* Mark all entries invalid */
for (i = 0; i < istate->cache_nr; i++) {
if (istate->cache[i]->ce_flags & CE_FSMONITOR_VALID) {
is_cache_changed = 1;
istate->cache[i]->ce_flags &= ~CE_FSMONITOR_VALID;
}
}
for (i = 0; i < istate->cache_nr; i++)
istate->cache[i]->ce_flags &= ~CE_FSMONITOR_VALID;
/* If we're going to check every file, ensure we save the results */
if (is_cache_changed)
istate->cache_changed |= FSMONITOR_CHANGED;
istate->cache_changed |= FSMONITOR_CHANGED;
if (istate->untracked)
istate->untracked->use_fsmonitor = 0;
}
strbuf_release(&query_result);
/* Now that we've updated istate, save the last_update_token */
FREE_AND_NULL(istate->fsmonitor_last_update);
istate->fsmonitor_last_update = strbuf_detach(&last_update_token, NULL);
/* Now that we've updated istate, save the last_update time */
istate->fsmonitor_last_update = last_update;
}
void add_fsmonitor(struct index_state *istate)
{
unsigned int i;
struct strbuf last_update = STRBUF_INIT;
if (!istate->fsmonitor_last_update) {
trace_printf_key(&trace_fsmonitor, "add fsmonitor");
istate->cache_changed |= FSMONITOR_CHANGED;
strbuf_addf(&last_update, "%"PRIu64"", getnanotime());
istate->fsmonitor_last_update = strbuf_detach(&last_update, NULL);
istate->fsmonitor_last_update = getnanotime();
/* reset the fsmonitor state */
for (i = 0; i < istate->cache_nr; i++)
@ -318,7 +219,7 @@ void remove_fsmonitor(struct index_state *istate)
if (istate->fsmonitor_last_update) {
trace_printf_key(&trace_fsmonitor, "remove fsmonitor");
istate->cache_changed |= FSMONITOR_CHANGED;
FREE_AND_NULL(istate->fsmonitor_last_update);
istate->fsmonitor_last_update = 0;
}
}
@ -335,12 +236,11 @@ void tweak_fsmonitor(struct index_state *istate)
}
/* Mark all previously saved entries as dirty */
if (istate->fsmonitor_dirty->bit_size > istate->cache_nr)
BUG("fsmonitor_dirty has more entries than the index (%"PRIuMAX" > %u)",
(uintmax_t)istate->fsmonitor_dirty->bit_size, istate->cache_nr);
ewah_each_bit(istate->fsmonitor_dirty, fsmonitor_ewah_callback, istate);
refresh_fsmonitor(istate);
/* Now mark the untracked cache for fsmonitor usage */
if (istate->untracked)
istate->untracked->use_fsmonitor = 1;
}
ewah_free(istate->fsmonitor_dirty);