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The `core.checkstat` configuration is currently stored in the global variable `check_stat`, which makes it shared across repository instances within a single process. Store it instead in `repo_config_values`, where eagerly‑parsed repository configuration lives. `core.checkstat` is parsed eagerly because it controls how `match_stat_data()` and related functions decide file freshness; a lazy parse could lead to unexpected behavior or complicate libification. This preserves the existing eager‑parsing behavior while tying the value to the repository it was read from, avoiding cross‑repository state leakage, and continuing the effort to reduce reliance on global configuration state. Update all references to use `repo_config_values()`. Mentored-by: Christian Couder <christian.couder@gmail.com> Mentored-by: Usman Akinyemi <usmanakinyemi202@gmail.com> Signed-off-by: Olamide Caleb Bello <belkid98@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
135 lines
3.1 KiB
C
135 lines
3.1 KiB
C
#define USE_THE_REPOSITORY_VARIABLE
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#include "git-compat-util.h"
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#include "environment.h"
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#include "statinfo.h"
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#include "repository.h"
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/*
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* Munge st_size into an unsigned int.
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*/
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static unsigned int munge_st_size(off_t st_size) {
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unsigned int sd_size = st_size;
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/*
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* If the file is an exact multiple of 4 GiB, modify the value so it
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* doesn't get marked as racily clean (zero).
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*/
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if (!sd_size && st_size)
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return 0x80000000;
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else
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return sd_size;
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}
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void fill_stat_data(struct stat_data *sd, struct stat *st)
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{
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sd->sd_ctime.sec = (unsigned int)st->st_ctime;
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sd->sd_mtime.sec = (unsigned int)st->st_mtime;
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sd->sd_ctime.nsec = ST_CTIME_NSEC(*st);
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sd->sd_mtime.nsec = ST_MTIME_NSEC(*st);
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sd->sd_dev = st->st_dev;
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sd->sd_ino = st->st_ino;
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sd->sd_uid = st->st_uid;
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sd->sd_gid = st->st_gid;
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sd->sd_size = munge_st_size(st->st_size);
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}
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static void set_times(struct stat *st, const struct stat_data *sd)
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{
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st->st_ctime = sd->sd_ctime.sec;
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st->st_mtime = sd->sd_mtime.sec;
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#ifdef NO_NSEC
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; /* nothing */
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#else
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#ifdef USE_ST_TIMESPEC
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st->st_ctimespec.tv_nsec = sd->sd_ctime.nsec;
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st->st_mtimespec.tv_nsec = sd->sd_mtime.nsec;
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#else
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st->st_ctim.tv_nsec = sd->sd_ctime.nsec;
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st->st_mtim.tv_nsec = sd->sd_mtime.nsec;
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#endif
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#endif
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}
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void fake_lstat_data(const struct stat_data *sd, struct stat *st)
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{
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set_times(st, sd);
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st->st_dev = sd->sd_dev;
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st->st_ino = sd->sd_ino;
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st->st_uid = sd->sd_uid;
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st->st_gid = sd->sd_gid;
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st->st_size = sd->sd_size;
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}
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int match_stat_data(const struct stat_data *sd, struct stat *st)
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{
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int changed = 0;
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struct repo_config_values *cfg = repo_config_values(the_repository);
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if (sd->sd_mtime.sec != (unsigned int)st->st_mtime)
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changed |= MTIME_CHANGED;
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if (cfg->trust_ctime && cfg->check_stat &&
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sd->sd_ctime.sec != (unsigned int)st->st_ctime)
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changed |= CTIME_CHANGED;
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#ifdef USE_NSEC
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if (cfg->check_stat && sd->sd_mtime.nsec != ST_MTIME_NSEC(*st))
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changed |= MTIME_CHANGED;
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if (cfg->trust_ctime && cfg->check_stat &&
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sd->sd_ctime.nsec != ST_CTIME_NSEC(*st))
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changed |= CTIME_CHANGED;
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#endif
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if (cfg->check_stat) {
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if (sd->sd_uid != (unsigned int) st->st_uid ||
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sd->sd_gid != (unsigned int) st->st_gid)
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changed |= OWNER_CHANGED;
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if (sd->sd_ino != (unsigned int) st->st_ino)
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changed |= INODE_CHANGED;
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}
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#ifdef USE_STDEV
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/*
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* st_dev breaks on network filesystems where different
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* clients will have different views of what "device"
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* the filesystem is on
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*/
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if (cfg->check_stat && sd->sd_dev != (unsigned int) st->st_dev)
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changed |= INODE_CHANGED;
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#endif
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if (sd->sd_size != munge_st_size(st->st_size))
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changed |= DATA_CHANGED;
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return changed;
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}
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void stat_validity_clear(struct stat_validity *sv)
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{
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FREE_AND_NULL(sv->sd);
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}
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int stat_validity_check(struct stat_validity *sv, const char *path)
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{
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struct stat st;
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if (stat(path, &st) < 0)
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return sv->sd == NULL;
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if (!sv->sd)
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return 0;
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return S_ISREG(st.st_mode) && !match_stat_data(sv->sd, &st);
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}
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void stat_validity_update(struct stat_validity *sv, int fd)
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{
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struct stat st;
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if (fstat(fd, &st) < 0 || !S_ISREG(st.st_mode))
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stat_validity_clear(sv);
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else {
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if (!sv->sd)
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CALLOC_ARRAY(sv->sd, 1);
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fill_stat_data(sv->sd, &st);
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}
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}
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