diff options
Diffstat (limited to 'vendor/modernc.org/libc/libc_unix.go')
| -rw-r--r-- | vendor/modernc.org/libc/libc_unix.go | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/vendor/modernc.org/libc/libc_unix.go b/vendor/modernc.org/libc/libc_unix.go index eb31f1d3..085c86b3 100644 --- a/vendor/modernc.org/libc/libc_unix.go +++ b/vendor/modernc.org/libc/libc_unix.go @@ -2,13 +2,14 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. -//go:build linux || darwin || freebsd || netbsd || openbsd -// +build linux darwin freebsd netbsd openbsd +//go:build unix +// +build unix package libc // import "modernc.org/libc" import ( "bufio" + "encoding/hex" "io/ioutil" "math" "math/rand" @@ -992,3 +993,30 @@ func Xctime_r(t *TLS, timep, buf uintptr) uintptr { copy((*RawMem)(unsafe.Pointer(buf))[:26:26], s) return buf } + +// ssize_t pread(int fd, void *buf, size_t count, off_t offset); +func Xpread(t *TLS, fd int32, buf uintptr, count types.Size_t, offset types.Off_t) types.Ssize_t { + var n int + var err error + switch { + case count == 0: + n, err = unix.Pread(int(fd), nil, int64(offset)) + default: + n, err = unix.Pread(int(fd), (*RawMem)(unsafe.Pointer(buf))[:count:count], int64(offset)) + if dmesgs && err == nil { + dmesg("%v: fd %v, off %#x, count %#x, n %#x\n%s", origin(1), fd, offset, count, n, hex.Dump((*RawMem)(unsafe.Pointer(buf))[:n:n])) + } + } + if err != nil { + if dmesgs { + dmesg("%v: %v FAIL", origin(1), err) + } + t.setErrno(err) + return -1 + } + + if dmesgs { + dmesg("%v: ok", origin(1)) + } + return types.Ssize_t(n) +} |