diff options
Diffstat (limited to 'source3/libads')
| -rw-r--r-- | source3/libads/kerberos.c | 62 |
1 files changed, 42 insertions, 20 deletions
diff --git a/source3/libads/kerberos.c b/source3/libads/kerberos.c index 40c3019a31..a0685b8a1c 100644 --- a/source3/libads/kerberos.c +++ b/source3/libads/kerberos.c @@ -616,31 +616,53 @@ BOOL create_local_private_krb5_conf_for_domain(const char *realm, const char *do #if defined(OVERWRITE_SYSTEM_KRB5_CONF) +#define SYSTEM_KRB5_CONF_PATH "/etc/krb5.conf" /* Insanity, sheer insanity..... */ - if (symlink(fname, "/etc/krb5.conf") == -1) { - if (errno != EEXIST) { - DEBUG(0,("create_local_private_krb5_conf_for_domain: symlink " - "of %s to /etc/krb5.conf failed. Errno %s\n", - fname, strerror(errno) )); - TALLOC_FREE(dname); - return True; /* Not a fatal error. */ - } - /* Yes, this is a race conditon... too bad. */ - if (unlink("/etc/krb5.conf") == -1) { - DEBUG(0,("create_local_private_krb5_conf_for_domain: unlink " - "of /etc/krb5.conf failed. Errno %s\n", - strerror(errno) )); + { + pstring linkpath; + int lret; + + lret = readlink(SYSTEM_KRB5_CONF_PATH, linkpath, sizeof(linkpath)-1); + linkpath[sizeof(pstring)-1] = '\0'; + + if (lret == 0 || strcmp(linkpath, fname) == 0) { + /* Symlink already exists. */ TALLOC_FREE(dname); - return True; /* Not a fatal error. */ + return True; } - if (symlink(fname, "/etc/krb5.conf") == -1) { - DEBUG(0,("create_local_private_krb5_conf_for_domain: " - "forced symlink of %s to /etc/krb5.conf failed. Errno %s\n", - fname, strerror(errno) )); - TALLOC_FREE(dname); - return True; /* Not a fatal error. */ + + /* Try and replace with a symlink. */ + if (symlink(fname, SYSTEM_KRB5_CONF_PATH) == -1) { + if (errno != EEXIST) { + DEBUG(0,("create_local_private_krb5_conf_for_domain: symlink " + "of %s to %s failed. Errno %s\n", + fname, SYSTEM_KRB5_CONF_PATH, strerror(errno) )); + TALLOC_FREE(dname); + return True; /* Not a fatal error. */ + } + + pstrcpy(linkpath, SYSTEM_KRB5_CONF_PATH); + pstrcat(linkpath, ".saved"); + + /* Yes, this is a race conditon... too bad. */ + if (rename(SYSTEM_KRB5_CONF_PATH, linkpath) == -1) { + DEBUG(0,("create_local_private_krb5_conf_for_domain: rename " + "of %s to %s failed. Errno %s\n", + SYSTEM_KRB5_CONF_PATH, linkpath, + strerror(errno) )); + TALLOC_FREE(dname); + return True; /* Not a fatal error. */ + } + + if (symlink(fname, "/etc/krb5.conf") == -1) { + DEBUG(0,("create_local_private_krb5_conf_for_domain: " + "forced symlink of %s to /etc/krb5.conf failed. Errno %s\n", + fname, strerror(errno) )); + TALLOC_FREE(dname); + return True; /* Not a fatal error. */ + } } } #endif |