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| author | Petr Baudis <pasky@ucw.cz> | 2010-08-22 16:37:10 +0200 |
|---|---|---|
| committer | Petr Baudis <pasky@suse.cz> | 2010-11-16 02:50:20 +0100 |
| commit | b9be604a7bcffd1fa5fc0141c0dfd2ddcbf09451 (patch) | |
| tree | 29812b5d7bca239619c0a005a752469d5975f2a5 | |
| parent | 31eb5a4c4986367538ccb154dfce0c84276ba151 (diff) | |
| download | glibc-b9be604a7bcffd1fa5fc0141c0dfd2ddcbf09451.tar glibc-b9be604a7bcffd1fa5fc0141c0dfd2ddcbf09451.tar.gz glibc-b9be604a7bcffd1fa5fc0141c0dfd2ddcbf09451.tar.bz2 glibc-b9be604a7bcffd1fa5fc0141c0dfd2ddcbf09451.zip | |
Fix multiple nss_compat initgroups() bugs
Compat initgroups() is completely broken; the code will always set
skip_initgroups_dyn to true, so initgroups() will never be actually
called, but due to the nature of the code, setgrent() won't be called
either - thus, subsequent invocations of initgroups() will not return
the NIS group list anymore.
This is a simple patch that makes sure skip_initgroups_dyn is set only
in case initgroups is not available; it also attempts to handle the
unavailability of other NSS interfaces better.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | nis/nss_compat/compat-initgroups.c | 19 |
2 files changed, 17 insertions, 8 deletions
@@ -1,3 +1,9 @@ +2010-05-31 Petr Baudis <pasky@suse.cz> + + [BZ #10085] + * nis/nss_compat/compat-initgroups.c (internal_getgrent_r): Fix + initialization of skip_initgroups_dyn. + 2010-05-17 Michael Matz <matz@suse.de> [BZ #11610] diff --git a/nis/nss_compat/compat-initgroups.c b/nis/nss_compat/compat-initgroups.c index 07a3b9282c..de8d95c7d1 100644 --- a/nis/nss_compat/compat-initgroups.c +++ b/nis/nss_compat/compat-initgroups.c @@ -474,18 +474,21 @@ internal_getgrent_r (ent_t *ent, char *buffer, size_t buflen, const char *user, /* If the selected module does not support getgrent_r or initgroups_dyn, abort. We cannot find the needed group entries. */ - if (nss_getgrent_r == NULL && nss_initgroups_dyn == NULL) + if (nss_initgroups_dyn == NULL || nss_getgrgid_r == NULL) + { + if (nss_setgrent != NULL) + { + nss_setgrent (1); + ent->need_endgrent = true; + } + ent->skip_initgroups_dyn = true; + } + + if (ent->skip_initgroups_dyn && nss_getgrent_r == NULL) return NSS_STATUS_UNAVAIL; ent->files = false; - if (nss_initgroups_dyn == NULL && nss_setgrent != NULL) - { - nss_setgrent (1); - ent->need_endgrent = true; - } - ent->skip_initgroups_dyn = true; - return getgrent_next_nss (ent, buffer, buflen, user, group, start, size, groupsp, limit, errnop); } |