diff options
Diffstat (limited to 'winsup/cygwin/security.cc')
| -rw-r--r-- | winsup/cygwin/security.cc | 46 |
1 files changed, 29 insertions, 17 deletions
diff --git a/winsup/cygwin/security.cc b/winsup/cygwin/security.cc index 473e62ff9..3cd0588d8 100644 --- a/winsup/cygwin/security.cc +++ b/winsup/cygwin/security.cc @@ -1367,27 +1367,39 @@ alloc_sd (__uid32_t uid, __gid32_t gid, int attribute, return NULL; } - /* Get SID and name of new owner. */ - char owner[UNLEN + 1]; + /* Get SID of owner. */ cygsid owner_sid; - struct passwd *pw = getpwuid32 (uid); - strcpy (owner, pw ? pw->pw_name : getlogin ()); - if (!pw || !owner_sid.getfrompw (pw)) - return NULL; - debug_printf ("owner: %s [%d]", owner, - *GetSidSubAuthority (owner_sid, - *GetSidSubAuthorityCount (owner_sid) - 1)); + /* Check for current user first */ + if (uid == myself->uid) + owner_sid = cygheap->user.sid (); + else if (uid == cygheap->user.orig_uid) + owner_sid = cygheap->user.orig_sid (); + else + { + /* Otherwise retrieve user data from /etc/passwd */ + struct passwd *pw = getpwuid32 (uid); + if (!pw) + { + debug_printf ("no /etc/passwd entry for %d", uid); + set_errno (EINVAL); + return NULL; + } + else if (!owner_sid.getfrompw (pw)) + { + debug_printf ("no SID for user %d", uid); + set_errno (EINVAL); + return NULL; + } + } + owner_sid.debug_print ("alloc_sd: owner SID ="); - /* Get SID and name of new group. */ + /* Get SID of new group. */ cygsid group_sid (NO_SID); struct __group32 *grp = getgrgid32 (gid); - if (grp) - { - if (!grp || !group_sid.getfromgr (grp)) - return NULL; - } - else - debug_printf ("no group"); + if (!grp) + debug_printf ("no /etc/group entry for %d", gid); + else if (!group_sid.getfromgr (grp)) + debug_printf ("no SID for group %d", gid); /* Initialize local security descriptor. */ SECURITY_DESCRIPTOR sd; |