mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-02-20 00:08:56 +00:00
Code Issues Packages Projects Releases Wiki Activity

std: Fix pwrite invocation on 32bit architectures

Browse Source
This commit is contained in:
LemonBoy 2020-03-11 20:03:36 +01:00
parent f58705b4a6
commit 89d7fc773d
1 changed files with 37 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
lib/std/os/linux.zig
View File

@ -350,7 +350,13 @@ pub fn pread(fd: i32, buf: [*]u8, count: usize, offset: u64) usize {
);
}
} else {
return syscall4(SYS_pread, @bitCast(usize, @as(isize, fd)), @ptrToInt(buf), count, offset);
return syscall4(
SYS_pread,
@bitCast(usize, @as(isize, fd)),
@ptrToInt(buf),
count,
offset,
);
}
}
@ -385,7 +391,36 @@ pub fn write(fd: i32, buf: [*]const u8, count: usize) usize {
}
pub fn pwrite(fd: i32, buf: [*]const u8, count: usize, offset: usize) usize {
return syscall4(SYS_pwrite, @bitCast(usize, @as(isize, fd)), @ptrToInt(buf), count, offset);
if (@hasDecl(@This(), "SYS_pwrite64")) {
if (require_aligned_register_pair) {
return syscall6(
SYS_pwrite64,
@bitCast(usize, @as(isize, fd)),
@ptrToInt(buf),
count,
0,
@truncate(usize, offset),
@truncate(usize, offset >> 32),
);
} else {
return syscall5(
SYS_pwrite64,
@bitCast(usize, @as(isize, fd)),
@ptrToInt(buf),
count,
@truncate(usize, offset),
@truncate(usize, offset >> 32),
);
}
} else {
return syscall4(
SYS_pwrite,
@bitCast(usize, @as(isize, fd)),
@ptrToInt(buf),
count,
offset,
);
}
}
pub fn rename(old: [*:0]const u8, new: [*:0]const u8) usize {