Support AIX operating system (#406)

* Support AIX operating system

* Fix unused imports

* Rustfmt and fix ordering.

Co-authored-by: Dan Gohman <[email protected]>

Author: ecnelises

src/backend/libc/fs/dir.rs

@@ -176,10 +176,16 @@ impl Dir {
 // struct, as the name is NUL-terminated and memory may not be allocated for
 // the full extent of the struct. Copy the fields one at a time.
 unsafe fn read_dirent(input: &libc_dirent) -> libc_dirent {
-    #[cfg(not(any(target_os = "haiku", target_os = "illumos", target_os = "solaris")))]
+    #[cfg(not(any(
+        target_os = "aix",
+        target_os = "haiku",
+        target_os = "illumos",
+        target_os = "solaris"
+    )))]
     let d_type = input.d_type;
 
     #[cfg(not(any(
+        target_os = "aix",
         target_os = "dragonfly",
         target_os = "freebsd",
         target_os = "haiku",
@@ -190,6 +196,9 @@ unsafe fn read_dirent(input: &libc_dirent) -> libc_dirent {
     )))]
     let d_off = input.d_off;
 
+    #[cfg(target_os = "aix")]
+    let d_offset = input.d_offset;
+
     #[cfg(not(any(
         target_os = "dragonfly",
         target_os = "freebsd",
@@ -235,9 +244,15 @@ unsafe fn read_dirent(input: &libc_dirent) -> libc_dirent {
     #[cfg_attr(target_os = "wasi", allow(unused_mut))]
     #[cfg(not(target_os = "dragonfly"))]
     let mut dirent = libc_dirent {
-        #[cfg(not(any(target_os = "haiku", target_os = "illumos", target_os = "solaris")))]
+        #[cfg(not(any(
+            target_os = "aix",
+            target_os = "haiku",
+            target_os = "illumos",
+            target_os = "solaris"
+        )))]
         d_type,
         #[cfg(not(any(
+            target_os = "aix",
             target_os = "freebsd",
             target_os = "haiku",
             target_os = "ios",
@@ -246,13 +261,16 @@ unsafe fn read_dirent(input: &libc_dirent) -> libc_dirent {
             target_os = "wasi",
         )))]
         d_off,
+        #[cfg(target_os = "aix")]
+        d_offset,
         #[cfg(not(any(target_os = "freebsd", target_os = "netbsd", target_os = "openbsd")))]
         d_ino,
         #[cfg(any(target_os = "freebsd", target_os = "netbsd", target_os = "openbsd"))]
         d_fileno,
         #[cfg(not(target_os = "wasi"))]
         d_reclen,
         #[cfg(any(
+            target_os = "aix",
             target_os = "freebsd",
             target_os = "ios",
             target_os = "macos",
@@ -364,7 +382,12 @@ impl DirEntry {
     }
 
     /// Returns the type of this directory entry.
-    #[cfg(not(any(target_os = "haiku", target_os = "illumos", target_os = "solaris")))]
+    #[cfg(not(any(
+        target_os = "aix",
+        target_os = "haiku",
+        target_os = "illumos",
+        target_os = "solaris"
+    )))]
     #[inline]
     pub fn file_type(&self) -> FileType {
         FileType::from_dirent_d_type(self.dirent.d_type)

src/backend/libc/fs/syscalls.rs

@@ -21,6 +21,7 @@ use super::super::offset::libc_fallocate;
 )))]
 use super::super::offset::libc_posix_fadvise;
 #[cfg(not(any(
+    target_os = "aix",
     target_os = "android",
     target_os = "dragonfly",
     target_os = "fuchsia",
@@ -78,6 +79,7 @@ use crate::fs::Access;
 )))]
 use crate::fs::Advice;
 #[cfg(not(any(
+    target_os = "aix",
     target_os = "dragonfly",
     target_os = "illumos",
     target_os = "netbsd",
@@ -1148,6 +1150,7 @@ unsafe fn futimens_old(fd: BorrowedFd<'_>, times: &Timestamps) -> io::Result<()>
 }
 
 #[cfg(not(any(
+    target_os = "aix",
     target_os = "dragonfly",
     target_os = "illumos",
     target_os = "ios",

src/backend/libc/fs/types.rs

@@ -688,6 +688,7 @@ bitflags! {
 }
 
 #[cfg(not(any(
+    target_os = "aix",
     target_os = "illumos",
     target_os = "netbsd",
     target_os = "openbsd",
@@ -701,6 +702,7 @@ bitflags! {
     pub struct FallocateFlags: i32 {
         /// `FALLOC_FL_KEEP_SIZE`
         #[cfg(not(any(
+            target_os = "aix",
             target_os = "dragonfly",
             target_os = "freebsd",
             target_os = "haiku",
@@ -713,6 +715,7 @@ bitflags! {
         const KEEP_SIZE = c::FALLOC_FL_KEEP_SIZE;
         /// `FALLOC_FL_PUNCH_HOLE`
         #[cfg(not(any(
+            target_os = "aix",
             target_os = "dragonfly",
             target_os = "freebsd",
             target_os = "haiku",
@@ -725,6 +728,7 @@ bitflags! {
         const PUNCH_HOLE = c::FALLOC_FL_PUNCH_HOLE;
         /// `FALLOC_FL_NO_HIDE_STALE`
         #[cfg(not(any(
+            target_os = "aix",
             target_os = "dragonfly",
             target_os = "freebsd",
             target_os = "haiku",
@@ -740,6 +744,7 @@ bitflags! {
         const NO_HIDE_STALE = c::FALLOC_FL_NO_HIDE_STALE;
         /// `FALLOC_FL_COLLAPSE_RANGE`
         #[cfg(not(any(
+            target_os = "aix",
             target_os = "dragonfly",
             target_os = "freebsd",
             target_os = "haiku",
@@ -753,6 +758,7 @@ bitflags! {
         const COLLAPSE_RANGE = c::FALLOC_FL_COLLAPSE_RANGE;
         /// `FALLOC_FL_ZERO_RANGE`
         #[cfg(not(any(
+            target_os = "aix",
             target_os = "dragonfly",
             target_os = "freebsd",
             target_os = "haiku",
@@ -766,6 +772,7 @@ bitflags! {
         const ZERO_RANGE = c::FALLOC_FL_ZERO_RANGE;
         /// `FALLOC_FL_INSERT_RANGE`
         #[cfg(not(any(
+            target_os = "aix",
             target_os = "dragonfly",
             target_os = "freebsd",
             target_os = "haiku",
@@ -779,6 +786,7 @@ bitflags! {
         const INSERT_RANGE = c::FALLOC_FL_INSERT_RANGE;
         /// `FALLOC_FL_UNSHARE_RANGE`
         #[cfg(not(any(
+            target_os = "aix",
             target_os = "dragonfly",
             target_os = "freebsd",
             target_os = "haiku",
@@ -812,7 +820,7 @@ bitflags! {
         const NOATIME = libc::ST_NOATIME as u64;
 
         /// `ST_NODEV`
-        #[cfg(any(target_os = "android", target_os = "emscripten", target_os = "fuchsia", target_os = "linux"))]
+        #[cfg(any(target_os = "aix", target_os = "android", target_os = "emscripten", target_os = "fuchsia", target_os = "linux"))]
         const NODEV = libc::ST_NODEV as u64;
 
         /// `ST_NODIRATIME`