int open(const char *path, int flags, ...{mode_t mode});
char *getcwd(char *buf, size_t size);
char *getwd(char *buf);
char *get_current_dir_name(void);
int close(int fd);
int link(const char *oldpath, const char *newpath); /* flags=AT_SYMLINK_NOFOLLOW */
int rename(const char *oldpath, const char *newpath); /* flags=AT_SYMLINK_NOFOLLOW */
int renameat(int olddirfd, const char *oldpath, int newdirfd, const char *newpath); /* flags=AT_SYMLINK_NOFOLLOW */
int unlink(const char *path); /* flags=AT_SYMLINK_NOFOLLOW */
int unlinkat(int dirfd, const char *path, int rflags); /* flags=AT_SYMLINK_NOFOLLOW */
int creat(const char *path, mode_t mode);
int __xstat(int ver, const char *path, struct stat *buf);
int __lxstat(int ver, const char *path, struct stat *buf); /* flags=AT_SYMLINK_NOFOLLOW */
int __fxstat(int ver, int fd, struct stat *buf);
int chmod(const char *path, mode_t mode);
int fchmod(int fd, mode_t mode);
int chown(const char *path, uid_t owner, gid_t group);
int fchown(int fd, uid_t owner, gid_t group);
int lchown(const char *path, uid_t owner, gid_t group); /* flags=AT_SYMLINK_NOFOLLOW */
int __fxstatat(int ver, int dirfd, const char *path, struct stat *buf, int flags);
int fchownat(int dirfd, const char *path, uid_t owner, gid_t group, int flags);
int fchmodat(int dirfd, const char *path, mode_t mode, int flags);
int openat(int dirfd, const char *path, int flags, ...{mode_t mode});
int __openat_2(int dirfd, const char *path, int flags);
int __xmknod(int ver, const char *path, mode_t mode, dev_t *dev); /* flags=AT_SYMLINK_NOFOLLOW */
int __xmknodat(int ver, int dirfd, const char *path, mode_t mode, dev_t *dev); /* flags=AT_SYMLINK_NOFOLLOW */
int dup2(int oldfd, int newfd);
int dup(int fd);
int mkdir(const char *path, mode_t mode); /* flags=AT_SYMLINK_NOFOLLOW */
int mkdirat(int dirfd, const char *path, mode_t mode);
int rmdir(const char *path); /* flags=AT_SYMLINK_NOFOLLOW */
int chdir(const char *path);
int fchdir(int dirfd);
int fcntl(int fd, int cmd, ...{struct flock *lock});
int fork(void);
int vfork(void);
# just so we know the inums of symlinks
int symlink(const char *oldname, const char *newpath); /* flags=AT_SYMLINK_NOFOLLOW */
int symlinkat(const char *oldname, int dirfd, const char *newpath); /* flags=AT_SYMLINK_NOFOLLOW */
# needed because glibc stdio does horrible things with inline asm syscalls
FILE *fopen(const char *path, const char *mode);
int fclose(FILE *fp);
FILE *freopen(const char *path, const char *mode, FILE *stream);
int mkstemp(char *template); /* flags=AT_SYMLINK_NOFOLLOW */
# I bet you never knew there were this many of these!
int setfsuid(uid_t fsuid);
int setfsgid(gid_t fsgid);
int seteuid(uid_t euid);
int setegid(gid_t egid);
uid_t getuid(void);
uid_t geteuid(void);
gid_t getgid(void);
gid_t getegid(void);
int setresuid(uid_t ruid, uid_t euid, uid_t suid);
int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
int setuid(uid_t uid);
int setgid(gid_t gid);
int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
int setreuid(uid_t ruid, uid_t euid);
int setregid(gid_t rgid, gid_t egid);
int setgroups(size_t size, const gid_t *list);
# primarily for use with chroot()
int chroot(const char *path);
ssize_t readlink(const char *path, char *buf, size_t bufsiz); /* flags=AT_SYMLINK_NOFOLLOW */
ssize_t readlinkat(int dirfd, const char *path, char *buf, size_t bufsiz); /* flags=AT_SYMLINK_NOFOLLOW */
int access(const char *path, int mode);
int acct(const char *path);
char *canonicalize_file_name(const char *filename);
int eaccess(const char *path, int mode);
int euidaccess(const char *path, int mode);
FTS *fts_open(char * const *path_argv, int options, int (*compar)(const FTSENT **, const FTSENT **));
int ftw(const char *path, int (*fn)(const char *, const struct stat *, int), int nopenfd);
int nftw(const char *path, int (*fn)(const char *, const struct stat *, int, struct FTW *), int nopenfd, int flag);
int glob(const char *pattern, int flags, int (*errfunc)(const char *, int), glob_t *pglob);
int lutimes(const char *path, const struct timeval *tv);
char *mkdtemp(char *template);
int mkfifo(const char *path, mode_t mode); /* flags=AT_SYMLINK_NOFOLLOW */
int mkfifoat(int dirfd, const char *path, mode_t mode); /* flags=AT_SYMLINK_NOFOLLOW */
char *mktemp(char *template);
long pathconf(const char *path, int name);
char *realpath(const char *name, char *resolved_name);
int remove(const char *path); /* flags=AT_SYMLINK_NOFOLLOW */
DIR *opendir(const char *path);
int scandir(const char *path, struct dirent ***namelist, int (*filter)(const struct dirent *), int (*compar)(const void *, const void *));
char *tempnam(const char *template, const char *pfx);
char *tmpnam(char *s);
int truncate(const char *path, off_t length);
int utime(const char *path, const struct utimbuf *buf);
int utimes(const char *path, const struct timeval *times);