X-Git-Url: https://ruderich.org/simon/gitweb/?p=coloredstderr%2Fcoloredstderr.git;a=blobdiff_plain;f=src%2Fcoloredstderr.c;h=4664f0d1a8d0efb033fb11bf28814fc4a730d12c;hp=a78fdd9a2e7ed377b36e56555d2de77f9fe1960a;hb=2241f5278e786c429b8d657c807ead792b4b5b36;hpb=afa1ef98fe940719c7085e93643185c6de94d300

diff --git a/src/coloredstderr.c b/src/coloredstderr.c
index a78fdd9..4664f0d 100644
--- a/src/coloredstderr.c
+++ b/src/coloredstderr.c
@@ -81,6 +81,12 @@ static int force_write_to_non_tty;
 /* Was ENV_NAME_FDS found and used when init_from_environment() was called?
  * This is not true if the process set it manually after initialization. */
 static int used_fds_set_by_user;
+/* Was any of our handle_*_pre()/handle_*_post() functions called recursively?
+ * If so don't print the pre/post string for the recursive calls. This is
+ * necessary on some systems (e.g. FreeBSD 9.1) which call multiple hooked
+ * functions while printing a string (e.g. a FILE * and a fd hook function is
+ * called). */
+static int handle_recursive;
 
 
 #include "constants.h"
@@ -181,6 +187,10 @@ static void handle_file_pre(FILE *stream) noinline;
 static void handle_file_post(FILE *stream) noinline;
 
 static void handle_fd_pre(int fd) {
+    if (handle_recursive++ > 0) {
+        return;
+    }
+
     int saved_errno = errno;
 
     if (unlikely(!pre_string || !post_string)) {
@@ -193,6 +203,10 @@ static void handle_fd_pre(int fd) {
     errno = saved_errno;
 }
 static void handle_fd_post(int fd) {
+    if (--handle_recursive > 0) {
+        return;
+    }
+
     int saved_errno = errno;
 
     /* write() already loaded above in handle_fd_pre(). */
@@ -202,6 +216,10 @@ static void handle_fd_post(int fd) {
 }
 
 static void handle_file_pre(FILE *stream) {
+    if (handle_recursive++ > 0) {
+        return;
+    }
+
     int saved_errno = errno;
 
     if (unlikely(!pre_string || !post_string)) {
@@ -214,6 +232,10 @@ static void handle_file_pre(FILE *stream) {
     errno = saved_errno;
 }
 static void handle_file_post(FILE *stream) {
+    if (--handle_recursive > 0) {
+        return;
+    }
+
     int saved_errno = errno;
 
     /* fwrite() already loaded above in handle_file_pre(). */
@@ -238,6 +260,14 @@ HOOK_FILE2(int, fputc, stream,
            int, c, FILE *, stream)
 HOOK_FILE2(int, putc, stream,
            int, c, FILE *, stream)
+/* The glibc uses a macro for putc() which expands to _IO_putc(). However
+ * sometimes the raw putc() is used as well, not sure why. Make sure to hook
+ * it too. */
+#ifdef putc
+# undef putc
+HOOK_FILE2(int, putc, stream,
+           int, c, FILE *, stream)
+#endif
 HOOK_FILE1(int, putchar, stdout,
            int, c)
 HOOK_FILE1(int, puts, stdout,