llgo/c/fcntl
This commit is contained in:
@@ -2,7 +2,6 @@ package main
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import (
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"github.com/goplus/llgo/c"
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"github.com/goplus/llgo/c/fcntl"
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"github.com/goplus/llgo/c/os"
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"unsafe"
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)
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@@ -10,12 +9,11 @@ import (
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func main() {
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filename := c.Str("testfile.txt")
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data := c.Str("Hello, fcntl!")
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data := c.Str("Hello, os!")
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var buffer [20]c.Char
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// Open a file, O_CREAT|O_WRONLY|O_TRUNC means create, write only, or clear the file
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fd := fcntl.Open(filename, fcntl.O_CREAT|fcntl.O_WRONLY|fcntl.O_TRUNC, 0644)
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fd := os.Open(filename, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0644)
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if fd == -1 {
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c.Printf(c.Str("open error\n"))
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return
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@@ -31,28 +29,30 @@ func main() {
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c.Printf(c.Str("Written %ld bytes to %s\n"), bytesWritten, filename)
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// Get file status flags
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flags := fcntl.FcNtl(fd, fcntl.F_GETFL)
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flags := os.Fcntl(fd, os.F_GETFL)
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if flags == -1 {
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c.Printf(c.Str("fcntl error\n"))
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c.Printf(c.Str("os error\n"))
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os.Close(fd)
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return
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}
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c.Printf(c.Str("File flags: %d\n"), flags)
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// Set the file status flag to non-blocking mode
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if fcntl.FcNtl(fd, fcntl.F_SETFL, flags|fcntl.O_NONBLOCK) == -1 {
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c.Printf(c.Str("fcntl error\n"))
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if os.Fcntl(fd, os.F_SETFL, flags|os.O_NONBLOCK) == -1 {
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c.Printf(c.Str("os error\n"))
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os.Close(fd)
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return
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}
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c.Printf(c.Str("set file status successfully\n"))
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c.Printf(c.Str("111"))
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// Close file
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os.Close(fd)
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// Reopen the file, O_RDONLY means read-only
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fd = fcntl.Open(filename, fcntl.O_RDONLY)
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fd = os.Open(filename, os.O_RDONLY)
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if fd == -1 {
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c.Printf(c.Str("open error\n"))
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return
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@@ -1 +0,0 @@
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Hello, fcntl!
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@@ -1,42 +0,0 @@
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package fcntl
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import (
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_ "unsafe"
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"github.com/goplus/llgo/c"
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)
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// #include <fdntl.h>
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const (
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LLGoPackage = "decl"
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)
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const (
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/* get file status flags */
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F_GETFL = 3
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/* set file status flags */
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F_SETFL = 4
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/* open for reading only */
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O_RDONLY = 0x0000
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/* open for writing only */
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O_WRONLY = 0x0001
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/* open for reading and writing */
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O_RDWR = 0x0002
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/* mask for above modes */
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O_ACCMODE = 0x0003
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/* no delay */
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O_NONBLOCK = 0x00000004
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/* create if nonexistant */
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O_CREAT = 0x00000200
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/* truncate to zero length */
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O_TRUNC = 0x00000400
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)
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//go:linkname FcNtl C.fcntl
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func FcNtl(a c.Int, b c.Int, vars ...any) c.Int
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//go:linkname Open C.open
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func Open(path *c.Char, op c.Int, vars ...any) c.Int
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28
c/os/os.go
28
c/os/os.go
@@ -35,6 +35,29 @@ const (
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PATH_MAX = C.PATH_MAX
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)
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const (
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/* get file status flags */
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F_GETFL = 3
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/* set file status flags */
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F_SETFL = 4
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/* open for reading only */
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O_RDONLY = 0x0000
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/* open for writing only */
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O_WRONLY = 0x0001
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/* open for reading and writing */
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O_RDWR = 0x0002
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/* mask for above modes */
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O_ACCMODE = 0x0003
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/* no delay */
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O_NONBLOCK = 0x00000004
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/* create if nonexistant */
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O_CREAT = 0x00000200
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/* truncate to zero length */
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O_TRUNC = 0x00000400
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)
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type (
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ModeT C.mode_t
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UidT C.uid_t
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@@ -146,7 +169,7 @@ func Fstatat(dirfd c.Int, path *c.Char, buf *StatT, flags c.Int) c.Int
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// -----------------------------------------------------------------------------
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//go:linkname Open C.open
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func Open(path *c.Char, flags c.Int, mode ModeT) c.Int
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func Open(path *c.Char, flags c.Int, __llgo_va_list ...any) c.Int
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//go:linkname Openat C.openat
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func Openat(dirfd c.Int, path *c.Char, flags c.Int, mode ModeT) c.Int
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@@ -154,6 +177,9 @@ func Openat(dirfd c.Int, path *c.Char, flags c.Int, mode ModeT) c.Int
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//go:linkname Creat C.creat
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func Creat(path *c.Char, mode ModeT) c.Int
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//go:linkname Fcntl C.fcntl
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func Fcntl(a c.Int, b c.Int, __llgo_va_list ...any) c.Int
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//go:linkname Dup C.dup
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func Dup(fd c.Int) c.Int
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