fs.c File Reference

Filesystem walk and stat implementation. More...

#include "fs.h"
#include <assert.h>
#include <errno.h>
#include <fts.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <time.h>
#include "jemalloc/jemalloc.h"
#include "log.h"

Include dependency graph for fs.c:

Functions
static int	fsprocent (FTSENT *ent, fswalkfn_t filefn, void *udata)
	Internal helper function to process a single file entry from the FTS walk. The file's last modified time and size are extracted from the stat structure and passed to the user-defined callback function.
int	fswalk (const char *dir, fswalkfn_t filefn, void *udata)
	Recursively walks the single directory described by dir and calls filefn for each file found.
int	fsstat (const char *fp, struct fsstat_s *s)
	Populates all fields of a given fsstat_s structure for the file described by the filepath fp.
char *	fsjoin (const char *dir, const char *file)
	Concatenates the two strings into a single path string, joined by a / (path separator) character. Neither input string is modified or freed.

Detailed Description

Filesystem walk and stat implementation.

Function Documentation

fsjoin()

char * fsjoin	(	const char *	dir,
		const char *	file
	)

Concatenates the two strings into a single path string, joined by a / (path separator) character. Neither input string is modified or freed.

Parameters

dir	The directory path
file	The file path

Returns

A dynamically allocated string containing the joined path (i.e. dir/file). The caller is responsible for freeing the string. NULL is returned if an error occurred.

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fsprocent()

static int fsprocent ( FTSENT *  ent, fswalkfn_t  filefn, void *  udata  )

static

Internal helper function to process a single file entry from the FTS walk. The file's last modified time and size are extracted from the stat structure and passed to the user-defined callback function.

Parameters

ent	The FTSENT file entry to process
filefn	The user-defined callback function to invoke for the file
udata	User data pointer to pass to the callback function

Returns

The return value of the user-defined callback function

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fsstat()

int fsstat	(	const char *	fp,
		struct fsstat_s *	s
	)

Populates all fields of a given fsstat_s structure for the file described by the filepath fp.

Parameters

fp	The filepath to fstat
s	The struct fsstat_s to populate

Returns

If successful, s is populated and 0 is returned. Otherwise -1 is returned and errno is set.

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fswalk()

int fswalk	(	const char *	dir,
		fswalkfn_t	filefn,
		void *	udata
	)

Recursively walks the single directory described by dir and calls filefn for each file found.

Parameters

dir	The directory to walk
filefn	The function to call for each file found. The filepath is passed as the first argument. If the function returns a non-zero value, the walk is terminated and the same value is returned by fswalk.
udata	User data to pass to filefn and dirfn

Returns

If successful, 0 is returned. An internal fswalk error will return a value of -1 and errno is set. Otherwise the return value of the first non-zero filefn or dirfn call is returned.

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