rehash_diff.c File Reference

Incremental PATH diff snapshot (initial slice). More...

#include "zpmod.mdh"
#include "zpmod.pro"
#include "zpmod_emoji.h"
#include "zpmod_rehash.h"
#include "zpmod_vendor_shims.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>

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Data Structures
struct	rh_entry
struct	rh_vec

Macros
#define	ZP_RH_SUBDIR   "zpmod"
#define	ZP_RH_FILE   "rehash_path_v1.snapshot"

Functions
static char *	zp_rh_base_cache_dir (void)
static char *	zp_rh_dir (char *nam)
static char *	zp_rh_file (char *nam)
static void	rh_vec_init (struct rh_vec *v)
static int	rh_vec_push (struct rh_vec *v, struct rh_entry *e)
static void	rh_vec_free (struct rh_vec *v)
static int	rh_load (const char *nam, const char *file, struct rh_vec *out)
static int	rh_write (char *nam, const char *file, struct rh_vec *paths)
static void	rh_collect_current (struct rh_vec *out)
int	zp_rehash_diff_core (char *nam)

Detailed Description

Incremental PATH diff snapshot (initial slice).

Goal: avoid full command rehash when PATH unchanged. This slice:

• Persists a snapshot file with directory list + per-dir mtime+inode hash
• On invocation, loads snapshot and computes diff: added, removed, metadata-changed
• Prints summary and lists changed dirs
• Future slices: selectively invoke internal hash invalidation for changed dirs only

Definition in file rehash_diff.c.

Macro Definition Documentation

ZP_RH_FILE

#define ZP_RH_FILE   "rehash_path_v1.snapshot"

Definition at line 26 of file rehash_diff.c.

ZP_RH_SUBDIR

#define ZP_RH_SUBDIR   "zpmod"

Definition at line 25 of file rehash_diff.c.

Function Documentation

rh_collect_current()

static void rh_collect_current ( struct rh_vec *  out )

static

Definition at line 214 of file rehash_diff.c.

References getaparam(), rh_entry::ino, rh_entry::mtime, rh_entry::path, rh_entry::present_now, rh_vec_push(), zalloc(), and zsfree().

Referenced by zp_rehash_diff_core().

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rh_load()

static int rh_load ( const char *  nam, const char *  file, struct rh_vec *  out  )

static

Definition at line 138 of file rehash_diff.c.

References rh_entry::ino, rh_entry::mtime, rh_entry::path, rh_entry::present_now, rh_vec_push(), zalloc(), and zsfree().

Referenced by zp_rehash_diff_core().

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rh_vec_free()

static void rh_vec_free ( struct rh_vec *  v )

static

Definition at line 120 of file rehash_diff.c.

References rh_vec::cap, rh_vec::items, rh_entry::path, rh_vec::size, zfree(), and zsfree().

Referenced by zp_rehash_diff_core().

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rh_vec_init()

static void rh_vec_init ( struct rh_vec *  v )

static

Definition at line 102 of file rehash_diff.c.

References rh_vec::cap, rh_vec::items, and rh_vec::size.

Referenced by zp_rehash_diff_core().

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rh_vec_push()

static int rh_vec_push ( struct rh_vec *  v, struct rh_entry *  e  )

static

Definition at line 107 of file rehash_diff.c.

References rh_vec::cap, rh_vec::items, rh_vec::size, and zrealloc().

Referenced by rh_collect_current(), and rh_load().

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rh_write()

static int rh_write ( char *  nam, const char *  file, struct rh_vec *  paths  )

static

Definition at line 194 of file rehash_diff.c.

References rh_vec::items, rh_entry::path, rh_vec::size, zp_icon(), and zwarnnam().

Referenced by zp_rehash_diff_core().

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zp_rehash_diff_core()

int zp_rehash_diff_core

(

char *

nam

)

Definition at line 241 of file rehash_diff.c.

References rh_entry::ino, rh_vec::items, rh_entry::mtime, rh_entry::path, rh_entry::present_now, rh_collect_current(), rh_load(), rh_vec_free(), rh_vec_init(), rh_write(), rh_vec::size, zp_icon(), zp_rh_file(), and zsfree().

Referenced by bin_zpmod().

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zp_rh_base_cache_dir()

static char* zp_rh_base_cache_dir ( void  )

static

Definition at line 28 of file rehash_diff.c.

References getsparam(), zalloc(), and ztrdup().

Referenced by zp_rh_dir().

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zp_rh_dir()

static char* zp_rh_dir ( char *  nam )

static

Definition at line 48 of file rehash_diff.c.

References zalloc(), zp_icon(), zp_rh_base_cache_dir(), ZP_RH_SUBDIR, zsfree(), and zwarnnam().

Referenced by zp_rh_file().

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zp_rh_file()

static char* zp_rh_file ( char *  nam )

static

Definition at line 75 of file rehash_diff.c.

References zalloc(), zp_rh_dir(), ZP_RH_FILE, and zsfree().

Referenced by zp_rehash_diff_core().

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