1 files changed, 418 insertions, 418 deletions
diff --git a/xorg-server/hw/xquartz/console_redirect.c b/xorg-server/hw/xquartz/console_redirect.c
index 70a819e42..f7b95df2b 100644
--- a/xorg-server/hw/xquartz/console_redirect.c
+++ b/xorg-server/hw/xquartz/console_redirect.c
@@ -1,418 +1,418 @@
-/* Copyright (c) 2011 Apple Inc.
- *
- * Permission is hereby granted, free of charge, to any person
- * obtaining a copy of this software and associated documentation files
- * (the "Software"), to deal in the Software without restriction,
- * including without limitation the rights to use, copy, modify, merge,
- * publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so,
- * subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT.  IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
- * HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Except as contained in this notice, the name(s) of the above
- * copyright holders shall not be used in advertising or otherwise to
- * promote the sale, use or other dealings in this Software without
- * prior written authorization.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#else
-#define DEBUG_CONSOLE_REDIRECT 1
-#define HAVE_LIBDISPATCH 1
-#endif
-
-#include <assert.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/event.h>
-#include <asl.h>
-#include <errno.h>
-#include <fcntl.h>
-
-#include "console_redirect.h"
-
-#define BUF_SIZE 512
-
-#ifdef HAVE_LIBDISPATCH
-#include <dispatch/dispatch.h>
-
-static dispatch_queue_t redirect_serial_q;
-static dispatch_group_t read_source_group;
-#else
-#include <pthread.h>
-
-static pthread_t redirect_pthread;
-static pthread_mutex_t redirect_fds_lock = PTHREAD_MUTEX_INITIALIZER;
-
-static int kq;
-
-/* Notifications to our reader thread */
-#define ASL_REDIRECT_TERMINATE ((void *)(uintptr_t)1)
-#endif
-
-typedef struct {
-    int level;
-    aslclient asl;
-    aslmsg msg;
-
-    /* Buffered reading */
-    char *buf;
-    char *w;
-
-#ifdef HAVE_LIBDISPATCH
-    dispatch_source_t read_source;
-#endif
-} asl_redirect;
-
-static asl_redirect *redirect_fds = NULL;
-static int n_redirect_fds = 0;
-
-/* Read from the FD until there is no more to read and redirect to ASL.
- * Preconditions:
- *      1: pthread_mutex_lock lock is held (pthreads) or called
- *         from the appropriate serial queue for operating on
- *         redirect_fds
- *      2: fd corresponds to a valid entry in redirect_fds
- *
- * Return values:
- *      If the pipe is closed, EOF is returned regardless of how many bytes
- *      were processed.  If the pipe is still open, the number of read bytes
- *      is returned.
- */
-static inline int _read_redirect(int fd, int flush) {
-    int total_read = 0;
-    int nbytes;
-    asl_redirect *aslr = &redirect_fds[fd];
-
-    while((nbytes = read(fd, aslr->w, BUF_SIZE - (aslr->w - aslr->buf) - 1)) > 0) {
-        char *s, *p;
-
-        /* Increment our returned number read */
-        total_read += nbytes;
-
-        nbytes += (aslr->w - aslr->buf);
-        aslr->buf[nbytes] = '\0';
-
-        /* One line at a time */
-        for(p=aslr->buf; *p && (p - aslr->buf) < nbytes; p = s + 1) {
-            // Find null or \n
-            for(s=p; *s && *s != '\n'; s++);
-            if(*s == '\n') {
-                *s='\0';
-                asl_log(aslr->asl, aslr->msg, aslr->level, "%s", p);
-            } else if(aslr->buf != p) {
-                memmove(aslr->buf, p, BUF_SIZE - (p - aslr->buf));
-                aslr->w = aslr->buf + (s - p);
-                break;
-            } else if(nbytes == BUF_SIZE - 1) {
-                asl_log(aslr->asl, aslr->msg, aslr->level, "%s", p);
-                aslr->w = aslr->buf;
-                break;
-            }
-        }
-    }
-
-    /* Flush if requested or we're at EOF */
-    if(flush || nbytes == 0) {
-        if(aslr->w > aslr->buf) {
-            *aslr->w = '\0';
-            asl_log(aslr->asl, aslr->msg, aslr->level, "%s", aslr->buf);
-        }
-    }
-
-    if(nbytes == 0)
-        return EOF;
-    return total_read;
-}
-
-#ifdef HAVE_LIBDISPATCH
-static void read_from_source(void *_source) {
-    dispatch_source_t source = (dispatch_source_t)_source;
-    int fd = dispatch_source_get_handle(source);
-    if(_read_redirect(fd, 0) == EOF) {
-        dispatch_source_cancel(source);
-    }
-}
-
-static void cancel_source(void *_source) {
-    dispatch_source_t source = (dispatch_source_t)_source;
-    int fd = dispatch_source_get_handle(source);
-    asl_redirect *aslr = &redirect_fds[fd];
-
-    /* Flush the buffer */
-    _read_redirect(fd, 1);
-
-    close(fd);
-    free(aslr->buf);
-    memset(aslr, 0, sizeof(*aslr));
-    dispatch_release(source);
-    dispatch_group_leave(read_source_group);
-}
-
-#else /* !HAVE_LIBDISPATCH */
-static void *redirect_thread(void *ctx __unused) {
-    struct kevent ev;
-    int n;
-
-    while(1) {
-        n = kevent(kq, NULL, 0, &ev, 1, NULL);
-
-        /* Bail on errors */
-        if(n < 0) {
-            asl_log(NULL, NULL, ASL_LEVEL_ERR, "kevent failure: %s", strerror(errno));
-            break;
-        }
-        
-        /* This should not happen */
-        if(n == 0)
-            continue;
-
-        switch(ev.filter) {
-            case EVFILT_READ:
-                pthread_mutex_lock(&redirect_fds_lock);
-                {
-                    int fd = ev.ident;
-                    int close_fd = 0;
-                    asl_redirect *aslr = &redirect_fds[fd];
-
-                    if(fd < 0 || fd >= n_redirect_fds || aslr->buf == NULL) {
-                        asl_log(NULL, NULL, ASL_LEVEL_ERR, "Unexpected file descriptor: %d", fd);
-                        goto next;
-                    }
-
-                    if(ev.flags & EV_EOF) {
-                        close_fd = 1;
-                        if(EOF != _read_redirect(fd, 1)) {
-                            asl_log(NULL, NULL, ASL_LEVEL_ERR, "kevent reported EOF on %d, but read doesn't concur.", fd);
-                        }
-                    } else {
-                        close_fd = (EOF == _read_redirect(fd, 0));
-                    }
-                    
-                    if(close_fd) {
-                        EV_SET(&ev, fd, EVFILT_READ, EV_DELETE, 0, 0, 0);
-                        kevent(kq, &ev, 1, NULL, 0, NULL);
-                        close(fd);
-                        free(aslr->buf);
-                        memset(aslr, 0, sizeof(*aslr));
-                    }
-                }
-                next:
-                pthread_mutex_unlock(&redirect_fds_lock);
-
-            case EVFILT_TIMER:
-                if(ev.udata == ASL_REDIRECT_TERMINATE)
-                    return NULL;
-
-            default:
-                ;;
-        }
-    }
-
-    return NULL;
-}
-#endif
-
-static void redirect_atexit(void) {
-    /* stdout is linebuffered, so flush the buffer */
-    if(redirect_fds[STDOUT_FILENO].buf)
-        fflush(stdout);
-
-#ifdef HAVE_LIBDISPATCH
-    {
-        int i;
-
-        /* Cancel all of our dispatch sources, so they flush to ASL */
-        for(i=0; i < n_redirect_fds; i++)
-            if(redirect_fds[i].read_source)
-                dispatch_source_cancel(redirect_fds[i].read_source);
-
-        /* Wait at least three seconds for our sources to flush to ASL */
-        dispatch_group_wait(read_source_group, dispatch_time(DISPATCH_TIME_NOW, 3LL * NSEC_PER_SEC));
-    }
-#else
-    {
-        struct kevent ev;
-
-        /* Tell our reader thread it is time to pack up and go home */
-        EV_SET(&ev, 0, EVFILT_TIMER, EV_ADD | EV_ONESHOT, 0, 0, ASL_REDIRECT_TERMINATE);
-        kevent(kq, &ev, 1, NULL, 0, NULL);
-    
-        pthread_join(redirect_pthread, NULL);
-    }
-#endif
-}
-
-#ifdef HAVE_LIBDISPATCH
-static void xq_asl_init(void *ctx __unused)
-#else
-static void xq_asl_init(void)
-#endif
-{
-    assert((redirect_fds = calloc(16, sizeof(*redirect_fds))) != NULL);
-    n_redirect_fds = 16;
-
-#ifdef HAVE_LIBDISPATCH
-    redirect_serial_q = dispatch_queue_create("com.apple.asl-redirect", NULL);
-    assert(redirect_serial_q != NULL);
-
-    read_source_group = dispatch_group_create();
-    assert(read_source_group != NULL);
-#else
-    assert((kq = kqueue()) != -1);
-    assert(pthread_create(&redirect_pthread, NULL, redirect_thread, NULL) == 0);
-#endif
-
-    atexit(redirect_atexit);
-}
-
-int xq_asl_log_fd(aslclient asl, aslmsg msg, int level, int fd) {
-#ifdef HAVE_LIBDISPATCH
-    int err __block = 0;
-    static dispatch_once_t once_control;
-    dispatch_once_f(&once_control, NULL, xq_asl_init);
-#else
-    int err = 0;
-    static pthread_once_t once_control = PTHREAD_ONCE_INIT;
-    assert(pthread_once(&once_control, xq_asl_init) == 0);
-#endif
-    
-    if(fd < 0)
-        return EBADF;
-    
-#ifdef HAVE_LIBDISPATCH
-#define BLOCK_DONE return
-    dispatch_sync(redirect_serial_q, ^
-#else
-#define BLOCK_DONE goto done
-    assert(pthread_mutex_lock(&redirect_fds_lock) == 0);
-#endif
-    {
-        /* Reallocate if we need more space */
-        if(fd >= n_redirect_fds) {
-            size_t new_n = 1 << (ffs(fd) + 1);
-            asl_redirect *new_array = realloc(redirect_fds, new_n * sizeof(*redirect_fds));
-            if(!new_array) {
-                err = errno;
-                BLOCK_DONE;
-            }
-            redirect_fds = new_array;
-            memset(redirect_fds + n_redirect_fds, 0, new_n - n_redirect_fds);
-            n_redirect_fds = new_n;
-        }
-        
-        /* If we're already listening on it, return error. */
-        if(redirect_fds[fd].buf != NULL) {
-            err = EBADF;
-            BLOCK_DONE;
-        }
-        
-        /* Initialize our buffer */
-        redirect_fds[fd].buf = (char *)malloc(BUF_SIZE);
-        if(redirect_fds[fd].buf == NULL) {
-            err = errno;
-            BLOCK_DONE;
-        }
-        redirect_fds[fd].w = redirect_fds[fd].buf;
-        
-        /* Store our ASL settings */
-        redirect_fds[fd].level = level;
-        redirect_fds[fd].asl = asl;
-        redirect_fds[fd].msg = msg;
-        
-        /* Don't block on reads from this fd */
-        fcntl(fd, F_SETFL, O_NONBLOCK);
-        
-        /* Start listening */
-#ifdef HAVE_LIBDISPATCH
-        {
-            dispatch_source_t read_source = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, fd, 0, redirect_serial_q);
-            redirect_fds[fd].read_source = read_source;
-            dispatch_set_context(read_source, read_source);
-            dispatch_source_set_event_handler_f(read_source, read_from_source);
-            dispatch_source_set_cancel_handler_f(read_source, cancel_source);
-            dispatch_group_enter(read_source_group);
-            dispatch_resume(read_source);
-        }
-#else
-        {
-            struct kevent ev;
-            EV_SET(&ev, fd, EVFILT_READ, EV_ADD, 0, 0, 0);
-            kevent(kq, &ev, 1, NULL, 0, NULL);
-        }
-#endif
-    }
-#ifdef HAVE_LIBDISPATCH
-    );
-#else
-done:
-    assert(pthread_mutex_unlock(&redirect_fds_lock) == 0);
-#endif
-#undef BLOCK_DONE
-    
-    return err;
-}
-
-int xq_asl_capture_fd(aslclient asl, aslmsg msg, int level, int fd) {
-    int pipepair[2];
-    
-    /* Create pipe */
-    if(pipe(pipepair) == -1)
-        return errno;
-    
-    /* Close the read fd but not the write fd on exec */
-    if(fcntl(pipepair[0], F_SETFD, FD_CLOEXEC) == -1)
-        return errno;
-
-    /* Replace the existing fd */
-    if(dup2(pipepair[1], fd) == -1) {
-        close(pipepair[0]);
-        close(pipepair[1]);
-        return errno;
-    }
-
-    /* If we capture STDOUT_FILENO, make sure we linebuffer stdout */
-    if(fd == STDOUT_FILENO)
-        setlinebuf(stdout);
-    
-    /* Close the duplicate fds since they've been reassigned */
-    close(pipepair[1]);
-
-    /* Hand off the read end of our pipe to xq_asl_log_fd */
-    return xq_asl_log_fd(asl, msg, level, pipepair[0]);
-}
-
-#ifdef DEBUG_CONSOLE_REDIRECT
-int main(int argc __unused, char **argv __unused) {
-    xq_asl_capture_fd(NULL, NULL, ASL_LEVEL_NOTICE, STDOUT_FILENO);
-    xq_asl_capture_fd(NULL, NULL, ASL_LEVEL_ERR, STDERR_FILENO);
-
-    fprintf(stderr, "TEST ERR1\n");
-    fprintf(stdout, "TEST OUT1\n");
-    fprintf(stderr, "TEST ERR2\n");
-    fprintf(stdout, "TEST OUT2\n");
-    system("/bin/echo SYST OUT");
-    system("/bin/echo SYST ERR >&2");
-    fprintf(stdout, "TEST OUT3\n");
-    fprintf(stdout, "TEST OUT4\n");
-    fprintf(stderr, "TEST ERR3\n");
-    fprintf(stderr, "TEST ERR4\n");
-
-    exit(0);
-}
-#endif
+/* Copyright (c) 2011 Apple Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT.  IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
+ * HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name(s) of the above
+ * copyright holders shall not be used in advertising or otherwise to
+ * promote the sale, use or other dealings in this Software without
+ * prior written authorization.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#else
+#define DEBUG_CONSOLE_REDIRECT 1
+#define HAVE_LIBDISPATCH 1
+#endif
+
+#include <assert.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/event.h>
+#include <asl.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#include "console_redirect.h"
+
+#define BUF_SIZE 512
+
+#ifdef HAVE_LIBDISPATCH
+#include <dispatch/dispatch.h>
+
+static dispatch_queue_t redirect_serial_q;
+static dispatch_group_t read_source_group;
+#else
+#include <pthread.h>
+
+static pthread_t redirect_pthread;
+static pthread_mutex_t redirect_fds_lock = PTHREAD_MUTEX_INITIALIZER;
+
+static int kq;
+
+/* Notifications to our reader thread */
+#define ASL_REDIRECT_TERMINATE ((void *)(uintptr_t)1)
+#endif
+
+typedef struct {
+    int level;
+    aslclient asl;
+    aslmsg msg;
+
+    /* Buffered reading */
+    char *buf;
+    char *w;
+
+#ifdef HAVE_LIBDISPATCH
+    dispatch_source_t read_source;
+#endif
+} asl_redirect;
+
+static asl_redirect *redirect_fds = NULL;
+static int n_redirect_fds = 0;
+
+/* Read from the FD until there is no more to read and redirect to ASL.
+ * Preconditions:
+ *      1: pthread_mutex_lock lock is held (pthreads) or called
+ *         from the appropriate serial queue for operating on
+ *         redirect_fds
+ *      2: fd corresponds to a valid entry in redirect_fds
+ *
+ * Return values:
+ *      If the pipe is closed, EOF is returned regardless of how many bytes
+ *      were processed.  If the pipe is still open, the number of read bytes
+ *      is returned.
+ */
+static inline int _read_redirect(int fd, int flush) {
+    int total_read = 0;
+    int nbytes;
+    asl_redirect *aslr = &redirect_fds[fd];
+
+    while((nbytes = read(fd, aslr->w, BUF_SIZE - (aslr->w - aslr->buf) - 1)) > 0) {
+        char *s, *p;
+
+        /* Increment our returned number read */
+        total_read += nbytes;
+
+        nbytes += (aslr->w - aslr->buf);
+        aslr->buf[nbytes] = '\0';
+
+        /* One line at a time */
+        for(p=aslr->buf; *p && (p - aslr->buf) < nbytes; p = s + 1) {
+            // Find null or \n
+            for(s=p; *s && *s != '\n'; s++);
+            if(*s == '\n') {
+                *s='\0';
+                asl_log(aslr->asl, aslr->msg, aslr->level, "%s", p);
+            } else if(aslr->buf != p) {
+                memmove(aslr->buf, p, BUF_SIZE - (p - aslr->buf));
+                aslr->w = aslr->buf + (s - p);
+                break;
+            } else if(nbytes == BUF_SIZE - 1) {
+                asl_log(aslr->asl, aslr->msg, aslr->level, "%s", p);
+                aslr->w = aslr->buf;
+                break;
+            }
+        }
+    }
+
+    /* Flush if requested or we're at EOF */
+    if(flush || nbytes == 0) {
+        if(aslr->w > aslr->buf) {
+            *aslr->w = '\0';
+            asl_log(aslr->asl, aslr->msg, aslr->level, "%s", aslr->buf);
+        }
+    }
+
+    if(nbytes == 0)
+        return EOF;
+    return total_read;
+}
+
+#ifdef HAVE_LIBDISPATCH
+static void read_from_source(void *_source) {
+    dispatch_source_t source = (dispatch_source_t)_source;
+    int fd = dispatch_source_get_handle(source);
+    if(_read_redirect(fd, 0) == EOF) {
+        dispatch_source_cancel(source);
+    }
+}
+
+static void cancel_source(void *_source) {
+    dispatch_source_t source = (dispatch_source_t)_source;
+    int fd = dispatch_source_get_handle(source);
+    asl_redirect *aslr = &redirect_fds[fd];
+
+    /* Flush the buffer */
+    _read_redirect(fd, 1);
+
+    close(fd);
+    free(aslr->buf);
+    memset(aslr, 0, sizeof(*aslr));
+    dispatch_release(source);
+    dispatch_group_leave(read_source_group);
+}
+
+#else /* !HAVE_LIBDISPATCH */
+static void *redirect_thread(void *ctx __unused) {
+    struct kevent ev;
+    int n;
+
+    while(1) {
+        n = kevent(kq, NULL, 0, &ev, 1, NULL);
+
+        /* Bail on errors */
+        if(n < 0) {
+            asl_log(NULL, NULL, ASL_LEVEL_ERR, "kevent failure: %s", strerror(errno));
+            break;
+        }
+        
+        /* This should not happen */
+        if(n == 0)
+            continue;
+
+        switch(ev.filter) {
+            case EVFILT_READ:
+                pthread_mutex_lock(&redirect_fds_lock);
+                {
+                    int fd = ev.ident;
+                    int close_fd = 0;
+                    asl_redirect *aslr = &redirect_fds[fd];
+
+                    if(fd < 0 || fd >= n_redirect_fds || aslr->buf == NULL) {
+                        asl_log(NULL, NULL, ASL_LEVEL_ERR, "Unexpected file descriptor: %d", fd);
+                        goto next;
+                    }
+
+                    if(ev.flags & EV_EOF) {
+                        close_fd = 1;
+                        if(EOF != _read_redirect(fd, 1)) {
+                            asl_log(NULL, NULL, ASL_LEVEL_ERR, "kevent reported EOF on %d, but read doesn't concur.", fd);
+                        }
+                    } else {
+                        close_fd = (EOF == _read_redirect(fd, 0));
+                    }
+                    
+                    if(close_fd) {
+                        EV_SET(&ev, fd, EVFILT_READ, EV_DELETE, 0, 0, 0);
+                        kevent(kq, &ev, 1, NULL, 0, NULL);
+                        close(fd);
+                        free(aslr->buf);
+                        memset(aslr, 0, sizeof(*aslr));
+                    }
+                }
+                next:
+                pthread_mutex_unlock(&redirect_fds_lock);
+
+            case EVFILT_TIMER:
+                if(ev.udata == ASL_REDIRECT_TERMINATE)
+                    return NULL;
+
+            default:
+                ;;
+        }
+    }
+
+    return NULL;
+}
+#endif
+
+static void redirect_atexit(void) {
+    /* stdout is linebuffered, so flush the buffer */
+    if(redirect_fds[STDOUT_FILENO].buf)
+        fflush(stdout);
+
+#ifdef HAVE_LIBDISPATCH
+    {
+        int i;
+
+        /* Cancel all of our dispatch sources, so they flush to ASL */
+        for(i=0; i < n_redirect_fds; i++)
+            if(redirect_fds[i].read_source)
+                dispatch_source_cancel(redirect_fds[i].read_source);
+
+        /* Wait at least three seconds for our sources to flush to ASL */
+        dispatch_group_wait(read_source_group, dispatch_time(DISPATCH_TIME_NOW, 3LL * NSEC_PER_SEC));
+    }
+#else
+    {
+        struct kevent ev;
+
+        /* Tell our reader thread it is time to pack up and go home */
+        EV_SET(&ev, 0, EVFILT_TIMER, EV_ADD | EV_ONESHOT, 0, 0, ASL_REDIRECT_TERMINATE);
+        kevent(kq, &ev, 1, NULL, 0, NULL);
+    
+        pthread_join(redirect_pthread, NULL);
+    }
+#endif
+}
+
+#ifdef HAVE_LIBDISPATCH
+static void xq_asl_init(void *ctx __unused)
+#else
+static void xq_asl_init(void)
+#endif
+{
+    assert((redirect_fds = calloc(16, sizeof(*redirect_fds))) != NULL);
+    n_redirect_fds = 16;
+
+#ifdef HAVE_LIBDISPATCH
+    redirect_serial_q = dispatch_queue_create("com.apple.asl-redirect", NULL);
+    assert(redirect_serial_q != NULL);
+
+    read_source_group = dispatch_group_create();
+    assert(read_source_group != NULL);
+#else
+    assert((kq = kqueue()) != -1);
+    assert(pthread_create(&redirect_pthread, NULL, redirect_thread, NULL) == 0);
+#endif
+
+    atexit(redirect_atexit);
+}
+
+int xq_asl_log_fd(aslclient asl, aslmsg msg, int level, int fd) {
+#ifdef HAVE_LIBDISPATCH
+    int err __block = 0;
+    static dispatch_once_t once_control;
+    dispatch_once_f(&once_control, NULL, xq_asl_init);
+#else
+    int err = 0;
+    static pthread_once_t once_control = PTHREAD_ONCE_INIT;
+    assert(pthread_once(&once_control, xq_asl_init) == 0);
+#endif
+    
+    if(fd < 0)
+        return EBADF;
+    
+#ifdef HAVE_LIBDISPATCH
+#define BLOCK_DONE return
+    dispatch_sync(redirect_serial_q, ^
+#else
+#define BLOCK_DONE goto done
+    assert(pthread_mutex_lock(&redirect_fds_lock) == 0);
+#endif
+    {
+        /* Reallocate if we need more space */
+        if(fd >= n_redirect_fds) {
+            size_t new_n = 1 << (ffs(fd) + 1);
+            asl_redirect *new_array = realloc(redirect_fds, new_n * sizeof(*redirect_fds));
+            if(!new_array) {
+                err = errno;
+                BLOCK_DONE;
+            }
+            redirect_fds = new_array;
+            memset(redirect_fds + n_redirect_fds, 0, new_n - n_redirect_fds);
+            n_redirect_fds = new_n;
+        }
+        
+        /* If we're already listening on it, return error. */
+        if(redirect_fds[fd].buf != NULL) {
+            err = EBADF;
+            BLOCK_DONE;
+        }
+        
+        /* Initialize our buffer */
+        redirect_fds[fd].buf = (char *)malloc(BUF_SIZE);
+        if(redirect_fds[fd].buf == NULL) {
+            err = errno;
+            BLOCK_DONE;
+        }
+        redirect_fds[fd].w = redirect_fds[fd].buf;
+        
+        /* Store our ASL settings */
+        redirect_fds[fd].level = level;
+        redirect_fds[fd].asl = asl;
+        redirect_fds[fd].msg = msg;
+        
+        /* Don't block on reads from this fd */
+        fcntl(fd, F_SETFL, O_NONBLOCK);
+        
+        /* Start listening */
+#ifdef HAVE_LIBDISPATCH
+        {
+            dispatch_source_t read_source = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, fd, 0, redirect_serial_q);
+            redirect_fds[fd].read_source = read_source;
+            dispatch_set_context(read_source, read_source);
+            dispatch_source_set_event_handler_f(read_source, read_from_source);
+            dispatch_source_set_cancel_handler_f(read_source, cancel_source);
+            dispatch_group_enter(read_source_group);
+            dispatch_resume(read_source);
+        }
+#else
+        {
+            struct kevent ev;
+            EV_SET(&ev, fd, EVFILT_READ, EV_ADD, 0, 0, 0);
+            kevent(kq, &ev, 1, NULL, 0, NULL);
+        }
+#endif
+    }
+#ifdef HAVE_LIBDISPATCH
+    );
+#else
+done:
+    assert(pthread_mutex_unlock(&redirect_fds_lock) == 0);
+#endif
+#undef BLOCK_DONE
+    
+    return err;
+}
+
+int xq_asl_capture_fd(aslclient asl, aslmsg msg, int level, int fd) {
+    int pipepair[2];
+    
+    /* Create pipe */
+    if(pipe(pipepair) == -1)
+        return errno;
+    
+    /* Close the read fd but not the write fd on exec */
+    if(fcntl(pipepair[0], F_SETFD, FD_CLOEXEC) == -1)
+        return errno;
+
+    /* Replace the existing fd */
+    if(dup2(pipepair[1], fd) == -1) {
+        close(pipepair[0]);
+        close(pipepair[1]);
+        return errno;
+    }
+
+    /* If we capture STDOUT_FILENO, make sure we linebuffer stdout */
+    if(fd == STDOUT_FILENO)
+        setlinebuf(stdout);
+    
+    /* Close the duplicate fds since they've been reassigned */
+    close(pipepair[1]);
+
+    /* Hand off the read end of our pipe to xq_asl_log_fd */
+    return xq_asl_log_fd(asl, msg, level, pipepair[0]);
+}
+
+#ifdef DEBUG_CONSOLE_REDIRECT
+int main(int argc __unused, char **argv __unused) {
+    xq_asl_capture_fd(NULL, NULL, ASL_LEVEL_NOTICE, STDOUT_FILENO);
+    xq_asl_capture_fd(NULL, NULL, ASL_LEVEL_ERR, STDERR_FILENO);
+
+    fprintf(stderr, "TEST ERR1\n");
+    fprintf(stdout, "TEST OUT1\n");
+    fprintf(stderr, "TEST ERR2\n");
+    fprintf(stdout, "TEST OUT2\n");
+    system("/bin/echo SYST OUT");
+    system("/bin/echo SYST ERR >&2");
+    fprintf(stdout, "TEST OUT3\n");
+    fprintf(stdout, "TEST OUT4\n");
+    fprintf(stderr, "TEST ERR3\n");
+    fprintf(stderr, "TEST ERR4\n");
+
+    exit(0);
+}
+#endif