libpwdgrp/pwd_grp.c: set opened /etc/{passwd,group,shadow} fds CLOEXEC

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/libpwdgrp/pwd_grp.c b/libpwdgrp/pwd_grp.c
index 2eb9d9dd1..23abdbec0 100644
--- a/libpwdgrp/pwd_grp.c
+++ b/libpwdgrp/pwd_grp.c
@@ -441,6 +441,7 @@ int getpwent_r(struct passwd *__restrict resultbuf,
                         rv = errno;
                         goto ERR;
                 }
+                close_on_exec_on(fileno(pwf));
         }
 
         rv = bb__pgsreader(bb__parsepwent, resultbuf, buffer, buflen, pwf);
@@ -488,6 +489,7 @@ int getgrent_r(struct group *__restrict resultbuf,
                         rv = errno;
                         goto ERR;
                 }
+                close_on_exec_on(fileno(grf));
         }
 
         rv = bb__pgsreader(bb__parsegrent, resultbuf, buffer, buflen, grf);
@@ -536,6 +538,7 @@ int getspent_r(struct spwd *resultbuf, char *buffer,
                         rv = errno;
                         goto ERR;
                 }
+                close_on_exec_on(fileno(spf));
         }
 
         rv = bb__pgsreader(bb__parsespent, resultbuf, buffer, buflen, spf);