[commit] master: save errno in sys_error()

[Oswald Buddenhagen via isync-devel]

commit e295f483d975d7e926bb5a2527aeab10c150dd4c
Author: Oswald Buddenhagen <o...@users.sf.net>
Date:   Fri Jan 1 14:46:31 2021 +0100

    save errno in sys_error()
    
    the print functions prior to perror() might otherwise clobber it.

 src/util.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/util.c b/src/util.c
index 7f8c453..dd6b12c 100644
--- a/src/util.c
+++ b/src/util.c
@@ -27,6 +27,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <errno.h>
 #include <string.h>
 #include <ctype.h>
 #include <pwd.h>
@@ -154,9 +155,11 @@ vsys_error( const char *msg, va_list va )
 {
        char buf[1024];
 
+       int errno_bak = errno;
        flushn();
        if ((uint)vsnprintf( buf, sizeof(buf), msg, va ) >= sizeof(buf))
                oob();
+       errno = errno_bak;
        perror( buf );
 }
 


_______________________________________________
isync-devel mailing list
isync-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/isync-devel