fs.c

/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Copyright 2001-2004, ps2dev - http://www.ps2dev.org
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/
 
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
 
#if __has_include(<sys/statvfs.h>)
#include <sys/statvfs.h>
#else
// Toolchains older than newlib-llvm's sys/statvfs.h; remove once every supported toolchain ships it.
struct statvfs {
    unsigned long f_bsize;
    unsigned long f_frsize;
    fsblkcnt_t f_blocks;
    fsblkcnt_t f_bfree;
    fsblkcnt_t f_bavail;
    fsfilcnt_t f_files;
    fsfilcnt_t f_ffree;
    fsfilcnt_t f_favail;
    unsigned long f_fsid;
    unsigned long f_flag;
    unsigned long f_namemax;
};
 
int statvfs(const char *path, struct statvfs *buf);
int fstatvfs(int fd, struct statvfs *buf);
#endif
 
extern int __path_absolute(const char *in, char *out, int len);
 
char *realpath(const char *path, char *resolved)
{
    char absolute[PATH_MAX];
    struct stat st;
 
    if (path == NULL || *path == '\0') {
        errno = path == NULL ? EINVAL : ENOENT;
        return NULL;
    }
    if (__path_absolute(path, absolute, sizeof(absolute)) < 0) {
        errno = ENAMETOOLONG;
        return NULL;
    }
    if (stat(absolute, &st) < 0)
        return NULL;
 
    if (resolved == NULL)
        return strdup(absolute);
    return strcpy(resolved, absolute);
}
 
int statvfs(const char *path, struct statvfs *buf)
{
    (void)path;
    (void)buf;
    errno = ENOSYS;
    return -1;
}
 
int fstatvfs(int fd, struct statvfs *buf)
{
    (void)fd;
    (void)buf;
    errno = ENOSYS;
    return -1;
}