diff options
author | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-08-25 15:13:14 +0000 |
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committer | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-08-25 15:13:14 +0000 |
commit | d0233291bc8a5068e52c69c210e5979e5324b5bc (patch) | |
tree | 7d9459449c33792c63eeb7baa071e76352e0baab /trunk/missing/dup2.c | |
parent | 0dc342de848a642ecce8db697b8fecd83a63e117 (diff) | |
parent | 72eaacaa15256ab95c3b52ea386f88586fb9da40 (diff) |
re-adding tag v1_9_0_4 as an alias of trunk@18848v1_9_0_4
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18849 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'trunk/missing/dup2.c')
-rw-r--r-- | trunk/missing/dup2.c | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/trunk/missing/dup2.c b/trunk/missing/dup2.c deleted file mode 100644 index 7554084c5d..0000000000 --- a/trunk/missing/dup2.c +++ /dev/null @@ -1,60 +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 "ruby/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(int fd1, int 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 -} |