IO#close_on_exec? e$B$He(B IO#close_on_exec= e$B$rF3F~$7$F!"$3$l$i$Ge(B
e$B$Oe(B 2e$B$D$Ne(B fd e$B$r07$&$N$O$I$&$G$7$g$&$+!#e(B
fd e$B$,e(B 2e$B$D$"$k$H!“C1=c$Je(B fcntl e$B$G$ON>J}$re(B close on exec
e$B$K$Ge(B
e$B$-$J$/$F:$$k!”$H$$$&$3$H$r@Ne(B [ruby-list:26156] e$B$GJs9p$7$F!“e(B
e$B$=$N7k2L$H$7$Fe(Bfcntl e$B$ON>J}$Ne(B fd
e$B$K<B9T$5$l$k$H$$$&$3$H$K$J$je(B
e$B$^$7$?$,!”$3$l$O$J$s$H$bMpK=$G$9!#$?$H$($P!"e(B
[ruby-list:26208] e$B$Ge(B F_DUPFD e$B$O$^$:$$$H=q$-$^$7$?$,!"e(BF_DUPFD
e$B$re(B 2e$B2s<B9T$7$F$R$H$D$N7k2L$rL5;k$9$k$H$$$&$N$O$J$s$H$b4qL/$Je(B
e$B5sF0$G$9!#e(B
e$B$H$$$&$o$1$G!“e(Bclose on exec e$B$KFC2=$7$F%a%=%C%I$rMQ0U$9$k$N$,e(B
e$B$$$$$H;W$$$^$9!#B>$Ne(B fcntl e$B$K$D$$$F$O!”$b$7I,MW$K$J$C$?$iHse(B
e$B>oMQ$N%$%s%9%?%s%9JQ?t$G$I$&$K$+$7$F!"=<J,$KMQK!$,GD0.$G$-$?e(B
e$B$i%a%=%C%I$K$9$k$3$H$r9M$($k$H$$$&$3$H$G!#e(B
Index: io.c
— io.c (revision 13977)
+++ io.c (working copy)
@@ -2295,6 +2295,99 @@ rb_io_isatty(VALUE io)
return Qtrue;
}
+/*
-
- call-seq:
-
-
ios.close_on_exec? => true or false
-
-
-
- Returns
trueif ios will be closed on exec.
- Returns
-
-
-
f = open("/dev/null")
-
-
-
f.close_on_exec? #=> false
-
-
-
f.close_on_exec = true
-
-
-
f.close_on_exec? #=> true
-
-
-
f.close_on_exec = false
-
-
-
f.close_on_exec? #=> false
-
- */
+static VALUE
+rb_io_close_on_exec_p(VALUE io)
+{
+#if defined(HAVE_FCNTL) && defined(F_GETFD) && defined(F_SETFD) &&
defined(FD_CLOEXEC)
- rb_io_t *fptr;
- VALUE write_io;
- int fd, ret;
- write_io = GetWriteIO(io);
- if (io != write_io) {
-
GetOpenFile(write_io, fptr); -
if (fptr && 0 <= (fd = fptr->fd)) { -
if ((ret = fcntl(fd, F_GETFD)) == -1)
rb_sys_fail(fptr->path);
-
if (!(ret & FD_CLOEXEC)) return Qfalse; -
} - }
- GetOpenFile(io, fptr);
- if (fptr && 0 <= (fd = fptr->fd)) {
-
if ((ret = fcntl(fd, F_GETFD)) == -1) rb_sys_fail(fptr->path); -
if (!(ret & FD_CLOEXEC)) return Qfalse; - }
- return Qtrue;
+#else - rb_notimplement();
- return Qnil; /* not reached */
+#endif
+}
+/*
-
- call-seq:
-
-
ios.close_on_exec = bool => true or false
-
-
-
- Sets a close-on-exec flag.
-
-
-
f = open("/dev/null")
-
-
-
f.close_on_exec = true
-
-
-
system("cat", "/proc/self/fd/#{f.fileno}")
-
-
-
#=> cat: /proc/self/fd/3: No such file or directory
-
- */
+static VALUE
+rb_io_set_close_on_exec(VALUE io, VALUE arg)
+{
+#if defined(HAVE_FCNTL) && defined(F_GETFD) && defined(F_SETFD) &&
defined(FD_CLOEXEC)
- int flag = RTEST(arg) ? FD_CLOEXEC : 0;
- rb_io_t *fptr;
- VALUE write_io;
- int fd, ret;
- write_io = GetWriteIO(io);
- if (io != write_io) {
-
GetOpenFile(write_io, fptr); -
if (fptr && 0 <= (fd = fptr->fd)) { -
if ((ret = fcntl(fptr->fd, F_GETFD)) == -1)
rb_sys_fail(fptr->path);
-
if ((ret & FD_CLOEXEC) != flag) { -
ret = (ret & ~FD_CLOEXEC) | flag; -
ret = fcntl(fd, F_SETFD, ret); -
if (ret == -1) rb_sys_fail(fptr->path); -
} -
} - }
- GetOpenFile(io, fptr);
- if (fptr && 0 <= (fd = fptr->fd)) {
-
if ((ret = fcntl(fd, F_GETFD)) == -1) rb_sys_fail(fptr->path); -
if ((ret & FD_CLOEXEC) != flag) { -
ret = (ret & ~FD_CLOEXEC) | flag; -
ret = fcntl(fd, F_SETFD, ret); -
if (ret == -1) rb_sys_fail(fptr->path); -
} - }
+#else - rb_notimplement();
+#endif - return Qnil;
+}
#define FMODE_PREP (1<<16)
#define IS_PREP_STDIO(f) ((f)->mode & FMODE_PREP)
#define PREP_STDIO_NAME(f) ((f)->path)
@@ -6021,6 +6114,9 @@ Init_IO(void)
rb_define_method(rb_cIO, “eof”, rb_io_eof, 0);
rb_define_method(rb_cIO, “eof?”, rb_io_eof, 0);
- rb_define_method(rb_cIO, “close_on_exec?”, rb_io_close_on_exec_p,
0); - rb_define_method(rb_cIO, “close_on_exec=”, rb_io_set_close_on_exec,
1); - rb_define_method(rb_cIO, “close”, rb_io_close_m, 0);
rb_define_method(rb_cIO, “closed?”, rb_io_closed, 0);
rb_define_method(rb_cIO, “close_read”, rb_io_close_read, 0);