diff options
Diffstat (limited to 'ruby_1_8_6/missing/dup2.c')
-rw-r--r-- | ruby_1_8_6/missing/dup2.c | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/ruby_1_8_6/missing/dup2.c b/ruby_1_8_6/missing/dup2.c deleted file mode 100644 index e7cc46f4c1..0000000000 --- a/ruby_1_8_6/missing/dup2.c +++ /dev/null @@ -1,61 +0,0 @@ -/* - * Public domain dup2() lookalike - * by Curtis Jackson @ AT&T Technologies, Burlington, NC - * electronic address: burl!rcj - * - * dup2 performs the following functions: - * - * Check to make sure that fd1 is a valid open file descriptor. - * Check to see if fd2 is already open; if so, close it. - * Duplicate fd1 onto fd2; checking to make sure fd2 is a valid fd. - * Return fd2 if all went well; return BADEXIT otherwise. - */ - -#include "config.h" - -#if defined(HAVE_FCNTL) -# include <fcntl.h> -#endif - -#if !defined(HAVE_FCNTL) || !defined(F_DUPFD) -# include <errno.h> -#endif - -#define BADEXIT -1 - -int -dup2(fd1, fd2) -int fd1, fd2; -{ -#if defined(HAVE_FCNTL) && defined(F_DUPFD) - if (fd1 != fd2) { -#ifdef F_GETFL - if (fcntl(fd1, F_GETFL) < 0) - return BADEXIT; - if (fcntl(fd2, F_GETFL) >= 0) - close(fd2); -#else - close(fd2); -#endif - if (fcntl(fd1, F_DUPFD, fd2) < 0) - return BADEXIT; - } - return fd2; -#else - extern int errno; - int i, fd, fds[256]; - - if (fd1 == fd2) return 0; - close(fd2); - for (i=0; i<256; i++) { - fd = fds[i] = dup(fd1); - if (fd == fd2) break; - } - while (i) { - close(fds[i--]); - } - if (fd == fd2) return 0; - errno = EMFILE; - return BADEXIT; -#endif -} |