Dup3 wraps the Dup3 syscall.

EnospcPrealloc preallocates ciphertext space without changing the file size.

Faccessat exists both in Linux and in MacOS 10.10+, but the Linux version DOES NOT support any flags.

Fallocate wraps the Fallocate syscall.

FchmodatNofollow is like Fchmodat but never follows symlinks.

Fchownat syscall.

Fgetxattr is a wrapper around unix.Fgetxattr that handles the buffer sizing.

Flistxattr is a wrapper for unix.Flistxattr that handles buffer sizing and parsing the returned blob to a string slice.

Fstatat syscall.

FutimesNano syscall.

Getdents syscall.

IsENOSPC tries to find out if "err" is a (potentially wrapped) ENOSPC error.

Lgetxattr is a wrapper around unix.Lgetxattr that handles the buffer sizing.

Linkat exists both in Linux and in MacOS 10.10+.

Llistxattr is a wrapper for unix.Llistxattr that handles buffer sizing and parsing the returned blob to a string slice.

Mkdirat syscall.

MkdiratUser runs the Mkdirat syscall in the context of a different user.

Mknodat wraps the Mknodat syscall.

MknodatUser runs the Mknodat syscall in the context of a different user.

Openat wraps the Openat syscall.

OpenatUser runs the Openat syscall in the context of a different user.

OpenDirNofollow opens the dir at "relPath" in a way that is secure against symlink attacks.

Readlinkat is a convenience wrapper around unix.Readlinkat() that takes care of buffer sizing.

Renameat wraps the Renameat syscall.

Symlinkat syscall.

SymlinkatUser runs the Symlinkat syscall in the context of a different user.

Unix2syscall converts a unix.Stat_t struct to a syscall.Stat_t struct.

Unlinkat syscall.

UtimesNanoAtNofollow is like UtimesNanoAt but never follows symlinks.

O_DIRECT means oncached I/O on Linux.

O_PATH is only defined on Linux.

PATH_MAX is the maximum allowed path length on Linux.

Make the buffer 1kB bigger so we can detect overflows.