#include "fileutil.h"
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/statvfs.h>
#include <errno.h>
#include <stdlib.h>
#include <assert.h>
#include <string.h>
int file_isReadable(char *file)
{
int fd = open( file, O_RDONLY );
if ( fd < 0 ) return FALSE;
close( fd );
return TRUE;
}
int file_isWritable(char *file)
{
int fd = open( file, O_WRONLY );
if ( fd >= 0 ) {
close( fd );
return TRUE;
}
fd = open( file, O_WRONLY | O_CREAT, 0600 );
if ( fd < 0 ) return FALSE;
close( fd );
unlink( file );
return TRUE;
}
int mkdir_p(const char* path)
{
assert( path != NULL );
if ( *path == '\0' ) return TRUE;
char buffer[strlen( path ) + 1];
strcpy( buffer, path );
char *current = buffer;
char *slash;
while ( (slash = strchr( current, '/' )) != NULL ) {
*slash = '\0';
if ( *buffer != '\0' && mkdir( buffer, 0750 ) != 0 && errno != EEXIST ) return FALSE;
*slash = '/';
current = slash + 1;
}
if ( mkdir( buffer, 0750 ) != 0 && errno != EEXIST ) return FALSE;
return TRUE;
}
int file_alloc(int fd, uint64_t offset, uint64_t size)
{
if ( fallocate( fd, 0, offset, size ) == 0 ) return TRUE; // fast way
if ( posix_fallocate( fd, offset, size ) == 0 ) return TRUE; // slow way
if ( lseek( fd, offset + size - 1, SEEK_SET ) != offset ) return FALSE; // dumb way
if ( write( fd, "", 1 ) != 1 ) return FALSE;
return TRUE;
}
uint64_t file_freeDiskSpace(const char * const path)
{
struct statvfs fiData;
if ( (statvfs( path, &fiData )) < 0 ) {
return 0;
}
return ((uint64_t)fiData.f_bavail * (uint64_t)fiData.f_bsize);
}
time_t file_lastModification(const char * const file)
{
struct stat st;
if ( stat( file, &st ) != 0 ) return 0;
return st.st_mtime;
}