filetime/unix/
mod.rs

1use crate::FileTime;
2use libc::{time_t, timespec};
3use std::fs;
4use std::os::unix::prelude::*;
5
6cfg_if::cfg_if! {
7    if #[cfg(target_os = "linux")] {
8        mod utimes;
9        mod linux;
10        pub use self::linux::*;
11    } else if #[cfg(target_os = "android")] {
12        mod android;
13        pub use self::android::*;
14    } else if #[cfg(target_os = "macos")] {
15        mod utimes;
16        mod macos;
17        pub use self::macos::*;
18    } else if #[cfg(any(target_os = "aix",
19                        target_os = "solaris",
20                        target_os = "illumos",
21                        target_os = "emscripten",
22                        target_os = "freebsd",
23                        target_os = "netbsd",
24                        target_os = "openbsd",
25                        target_os = "haiku"))] {
26        mod utimensat;
27        pub use self::utimensat::*;
28    } else {
29        mod utimes;
30        pub use self::utimes::*;
31    }
32}
33
34#[allow(dead_code)]
35fn to_timespec(ft: &Option<FileTime>) -> timespec {
36    cfg_if::cfg_if! {
37        if #[cfg(any(target_os = "macos",
38                     target_os = "illumos",
39                     target_os = "freebsd"))] {
40            // https://github.com/apple/darwin-xnu/blob/a449c6a3b8014d9406c2ddbdc81795da24aa7443/bsd/sys/stat.h#L541
41            // https://github.com/illumos/illumos-gate/blob/master/usr/src/boot/sys/sys/stat.h#L312
42            // https://svnweb.freebsd.org/base/head/sys/sys/stat.h?view=markup#l359
43            const UTIME_OMIT: i64 = -2;
44        } else if #[cfg(target_os = "openbsd")] {
45            // https://github.com/openbsd/src/blob/master/sys/sys/stat.h#L189
46            const UTIME_OMIT: i64 = -1;
47        } else if #[cfg(target_os = "haiku")] {
48            // https://git.haiku-os.org/haiku/tree/headers/posix/sys/stat.h?#n106
49            const UTIME_OMIT: i64 = 1000000001;
50        } else if #[cfg(target_os = "aix")] {
51            // AIX hasn't disclosed system header files yet.
52            // https://github.com/golang/go/blob/master/src/cmd/vendor/golang.org/x/sys/unix/zerrors_aix_ppc64.go#L1007
53            const UTIME_OMIT: i64 = -3;
54        } else {
55            // http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/sys/stat.h?annotate=1.68.30.1
56            // https://github.com/emscripten-core/emscripten/blob/master/system/include/libc/sys/stat.h#L71
57            const UTIME_OMIT: i64 = 1_073_741_822;
58        }
59    }
60
61    let mut ts: timespec = unsafe { std::mem::zeroed() };
62    if let &Some(ft) = ft {
63        ts.tv_sec = ft.seconds() as time_t;
64        ts.tv_nsec = ft.nanoseconds() as _;
65    } else {
66        ts.tv_sec = 0;
67        ts.tv_nsec = UTIME_OMIT as _;
68    }
69
70    ts
71}
72
73pub fn from_last_modification_time(meta: &fs::Metadata) -> FileTime {
74    FileTime {
75        seconds: meta.mtime(),
76        nanos: meta.mtime_nsec() as u32,
77    }
78}
79
80pub fn from_last_access_time(meta: &fs::Metadata) -> FileTime {
81    FileTime {
82        seconds: meta.atime(),
83        nanos: meta.atime_nsec() as u32,
84    }
85}
86
87pub fn from_creation_time(meta: &fs::Metadata) -> Option<FileTime> {
88    #[cfg(target_os = "bitrig")]
89    {
90        use std::os::bitrig::fs::MetadataExt;
91        Some(FileTime {
92            seconds: meta.st_birthtime(),
93            nanos: meta.st_birthtime_nsec() as u32,
94        })
95    }
96
97    #[cfg(not(target_os = "bitrig"))]
98    {
99        meta.created().map(|i| i.into()).ok()
100    }
101}