From cb62745abd33d661c39c80e3a755532770a527c9 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Mon, 31 Jul 2006 23:33:04 +0000 Subject: Avoid unnecessary setXXent calls into the backend NSS module. If backend setXXent call failed, don't have internal_setXXent fail. Just remember this until it is needed. --- nis/nss_compat/compat-grp.c | 29 ++++++++++--------- nis/nss_compat/compat-pwd.c | 69 +++++++++++++++++++++++--------------------- nis/nss_compat/compat-spwd.c | 59 +++++++++++++++++++++---------------- 3 files changed, 85 insertions(+), 72 deletions(-) (limited to 'nis') diff --git a/nis/nss_compat/compat-grp.c b/nis/nss_compat/compat-grp.c index 093876fd74..f2f7195be1 100644 --- a/nis/nss_compat/compat-grp.c +++ b/nis/nss_compat/compat-grp.c @@ -59,12 +59,13 @@ struct blacklist_t struct ent_t { bool_t files; + enum nss_status setent_status; FILE *stream; struct blacklist_t blacklist; }; typedef struct ent_t ent_t; -static ent_t ext_ent = {TRUE, NULL, {NULL, 0, 0}}; +static ent_t ext_ent = { TRUE, NSS_STATUS_SUCCESS, NULL, { NULL, 0, 0 }}; /* Protect global state against multiple changers. */ __libc_lock_define_initialized (static, lock) @@ -89,7 +90,7 @@ init_nss_interface (void) } static enum nss_status -internal_setgrent (ent_t *ent, int stayopen) +internal_setgrent (ent_t *ent, int stayopen, int needent) { enum nss_status status = NSS_STATUS_SUCCESS; @@ -137,12 +138,8 @@ internal_setgrent (ent_t *ent, int stayopen) else rewind (ent->stream); - if (status == NSS_STATUS_SUCCESS && nss_setgrent) - { - status = nss_setgrent (stayopen); - if (status == NSS_STATUS_UNAVAIL) - status = NSS_STATUS_SUCCESS; - } + if (needent && status == NSS_STATUS_SUCCESS && nss_setgrent) + ent->setent_status = nss_setgrent (stayopen); return status; } @@ -158,7 +155,7 @@ _nss_compat_setgrent (int stayopen) if (ni == NULL) init_nss_interface (); - result = internal_setgrent (&ext_ent, stayopen); + result = internal_setgrent (&ext_ent, stayopen, 1); __libc_lock_unlock (lock); @@ -212,6 +209,10 @@ getgrent_next_nss (struct group *result, ent_t *ent, char *buffer, if (!nss_getgrent_r) return NSS_STATUS_UNAVAIL; + /* If the setgrent call failed, say so. */ + if (ent->setent_status != NSS_STATUS_SUCCESS) + return ent->setent_status; + do { enum nss_status status; @@ -363,7 +364,7 @@ _nss_compat_getgrent_r (struct group *grp, char *buffer, size_t buflen, init_nss_interface (); if (ext_ent.stream == NULL) - result = internal_setgrent (&ext_ent, 1); + result = internal_setgrent (&ext_ent, 1, 1); if (result == NSS_STATUS_SUCCESS) { @@ -485,7 +486,7 @@ enum nss_status _nss_compat_getgrnam_r (const char *name, struct group *grp, char *buffer, size_t buflen, int *errnop) { - ent_t ent = {TRUE, NULL, {NULL, 0, 0}}; + ent_t ent = { TRUE, NSS_STATUS_SUCCESS, NULL, { NULL, 0, 0 }}; enum nss_status result; if (name[0] == '-' || name[0] == '+') @@ -498,7 +499,7 @@ _nss_compat_getgrnam_r (const char *name, struct group *grp, __libc_lock_unlock (lock); - result = internal_setgrent (&ent, 0); + result = internal_setgrent (&ent, 0, 0); if (result == NSS_STATUS_SUCCESS) result = internal_getgrnam_r (name, grp, &ent, buffer, buflen, errnop); @@ -613,7 +614,7 @@ enum nss_status _nss_compat_getgrgid_r (gid_t gid, struct group *grp, char *buffer, size_t buflen, int *errnop) { - ent_t ent = {TRUE, NULL, {NULL, 0, 0}}; + ent_t ent = { TRUE, NSS_STATUS_SUCCESS, NULL, { NULL, 0, 0 }}; enum nss_status result; __libc_lock_lock (lock); @@ -623,7 +624,7 @@ _nss_compat_getgrgid_r (gid_t gid, struct group *grp, __libc_lock_unlock (lock); - result = internal_setgrent (&ent, 0); + result = internal_setgrent (&ent, 0, 0); if (result == NSS_STATUS_SUCCESS) result = internal_getgrgid_r (gid, grp, &ent, buffer, buflen, errnop); diff --git a/nis/nss_compat/compat-pwd.c b/nis/nss_compat/compat-pwd.c index 1031714529..ac132046da 100644 --- a/nis/nss_compat/compat-pwd.c +++ b/nis/nss_compat/compat-pwd.c @@ -62,9 +62,10 @@ struct blacklist_t struct ent_t { - bool_t netgroup; - bool_t first; - bool_t files; + bool netgroup; + bool first; + bool files; + enum nss_status setent_status; FILE *stream; struct blacklist_t blacklist; struct passwd pwd; @@ -72,8 +73,9 @@ struct ent_t }; typedef struct ent_t ent_t; -static ent_t ext_ent = {0, 0, TRUE, NULL, {NULL, 0, 0}, - {NULL, NULL, 0, 0, NULL, NULL, NULL}}; +static ent_t ext_ent = { false, false, true, NSS_STATUS_SUCCESS, NULL, + { NULL, 0, 0 }, + { NULL, NULL, 0, 0, NULL, NULL, NULL }}; /* Protect global state against multiple changers. */ __libc_lock_define_initialized (static, lock) @@ -202,12 +204,13 @@ copy_pwd_changes (struct passwd *dest, struct passwd *src, } static enum nss_status -internal_setpwent (ent_t *ent, int stayopen) +internal_setpwent (ent_t *ent, int stayopen, int needent) { enum nss_status status = NSS_STATUS_SUCCESS; - ent->first = ent->netgroup = FALSE; - ent->files = TRUE; + ent->first = ent->netgroup = false; + ent->files = true; + ent->setent_status = NSS_STATUS_SUCCESS; /* If something was left over free it. */ if (ent->netgroup) @@ -257,12 +260,8 @@ internal_setpwent (ent_t *ent, int stayopen) give_pwd_free (&ent->pwd); - if (status == NSS_STATUS_SUCCESS && nss_setpwent) - { - status = nss_setpwent (stayopen); - if (status == NSS_STATUS_UNAVAIL) - status = NSS_STATUS_SUCCESS; - } + if (needent && status == NSS_STATUS_SUCCESS && nss_setpwent) + ent->setent_status = nss_setpwent (stayopen); return status; } @@ -278,7 +277,7 @@ _nss_compat_setpwent (int stayopen) if (ni == NULL) init_nss_interface (); - result = internal_setpwent (&ext_ent, stayopen); + result = internal_setpwent (&ext_ent, stayopen, 1); __libc_lock_unlock (lock); @@ -301,7 +300,7 @@ internal_endpwent (ent_t *ent) if (ent->netgroup) __internal_endnetgrent (&ent->netgrdata); - ent->first = ent->netgroup = FALSE; + ent->first = ent->netgroup = false; if (ent->blacklist.data != NULL) { @@ -348,17 +347,17 @@ getpwent_next_nss_netgr (const char *name, struct passwd *result, ent_t *ent, if (yp_get_default_domain (&curdomain) != YPERR_SUCCESS) { - ent->netgroup = FALSE; - ent->first = FALSE; + ent->netgroup = false; + ent->first = false; give_pwd_free (&ent->pwd); return NSS_STATUS_UNAVAIL; } - if (ent->first == TRUE) + if (ent->first == true) { memset (&ent->netgrdata, 0, sizeof (struct __netgrent)); __internal_setnetgrent (group, &ent->netgrdata); - ent->first = FALSE; + ent->first = false; } while (1) @@ -427,6 +426,10 @@ getpwent_next_nss (struct passwd *result, ent_t *ent, char *buffer, if (!nss_getpwent_r) return NSS_STATUS_UNAVAIL; + /* If the setpwent call failed, say so. */ + if (ent->setent_status != NSS_STATUS_SUCCESS) + return ent->setent_status; + p2len = pwd_need_buflen (&ent->pwd); if (p2len > buflen) { @@ -437,7 +440,7 @@ getpwent_next_nss (struct passwd *result, ent_t *ent, char *buffer, buflen -= p2len; if (ent->first) - ent->first = FALSE; + ent->first = false; do { @@ -570,8 +573,8 @@ getpwent_next_file (struct passwd *result, ent_t *ent, { enum nss_status status; - ent->netgroup = TRUE; - ent->first = TRUE; + ent->netgroup = true; + ent->first = true; copy_pwd_changes (&ent->pwd, result, NULL, 0); status = getpwent_next_nss_netgr (NULL, result, ent, @@ -626,8 +629,8 @@ getpwent_next_file (struct passwd *result, ent_t *ent, /* +:... */ if (result->pw_name[0] == '+' && result->pw_name[1] == '\0') { - ent->files = FALSE; - ent->first = TRUE; + ent->files = false; + ent->first = true; copy_pwd_changes (&ent->pwd, result, NULL, 0); return getpwent_next_nss (result, ent, buffer, buflen, errnop); @@ -675,7 +678,7 @@ _nss_compat_getpwent_r (struct passwd *pwd, char *buffer, size_t buflen, init_nss_interface (); if (ext_ent.stream == NULL) - result = internal_setpwent (&ext_ent, 1); + result = internal_setpwent (&ext_ent, 1, 1); if (result == NSS_STATUS_SUCCESS) result = internal_getpwent_r (pwd, &ext_ent, buffer, buflen, errnop); @@ -827,8 +830,8 @@ _nss_compat_getpwnam_r (const char *name, struct passwd *pwd, char *buffer, size_t buflen, int *errnop) { enum nss_status result; - ent_t ent = {0, 0, TRUE, NULL, {NULL, 0, 0}, - {NULL, NULL, 0, 0, NULL, NULL, NULL}}; + ent_t ent = { false, false, true, NSS_STATUS_SUCCESS, NULL, { NULL, 0, 0 }, + { NULL, NULL, 0, 0, NULL, NULL, NULL }}; if (name[0] == '-' || name[0] == '+') return NSS_STATUS_NOTFOUND; @@ -840,7 +843,7 @@ _nss_compat_getpwnam_r (const char *name, struct passwd *pwd, __libc_lock_unlock (lock); - result = internal_setpwent (&ent, 0); + result = internal_setpwent (&ent, 0, 0); if (result == NSS_STATUS_SUCCESS) result = internal_getpwnam_r (name, pwd, &ent, buffer, buflen, errnop); @@ -1069,8 +1072,8 @@ _nss_compat_getpwuid_r (uid_t uid, struct passwd *pwd, char *buffer, size_t buflen, int *errnop) { enum nss_status result; - ent_t ent = {0, 0, TRUE, NULL, {NULL, 0, 0}, - {NULL, NULL, 0, 0, NULL, NULL, NULL}}; + ent_t ent = { false, false, true, NSS_STATUS_SUCCESS, NULL, { NULL, 0, 0 }, + { NULL, NULL, 0, 0, NULL, NULL, NULL }}; __libc_lock_lock (lock); @@ -1079,7 +1082,7 @@ _nss_compat_getpwuid_r (uid_t uid, struct passwd *pwd, __libc_lock_unlock (lock); - result = internal_setpwent (&ent, 0); + result = internal_setpwent (&ent, 0, 0); if (result == NSS_STATUS_SUCCESS) result = internal_getpwuid_r (uid, pwd, &ent, buffer, buflen, errnop); @@ -1136,7 +1139,7 @@ blacklist_store_name (const char *name, ent_t *ent) return; } -/* returns TRUE if ent->blacklist contains name, else FALSE */ +/* Returns TRUE if ent->blacklist contains name, else FALSE. */ static bool_t in_blacklist (const char *name, int namelen, ent_t *ent) { diff --git a/nis/nss_compat/compat-spwd.c b/nis/nss_compat/compat-spwd.c index 5c820a5f65..d1de3f75b0 100644 --- a/nis/nss_compat/compat-spwd.c +++ b/nis/nss_compat/compat-spwd.c @@ -59,9 +59,10 @@ struct blacklist_t struct ent_t { - bool_t netgroup; - bool_t files; - bool_t first; + bool netgroup; + bool files; + bool first; + enum nss_status setent_status; FILE *stream; struct blacklist_t blacklist; struct spwd pwd; @@ -69,8 +70,9 @@ struct ent_t }; typedef struct ent_t ent_t; -static ent_t ext_ent = {0, TRUE, 0, NULL, {NULL, 0, 0}, - {NULL, NULL, 0, 0, 0, 0, 0, 0, 0}}; +static ent_t ext_ent = { false, true, false, NSS_STATUS_SUCCESS, NULL, + { NULL, 0, 0}, + { NULL, NULL, 0, 0, 0, 0, 0, 0, 0}}; /* Protect global state against multiple changers. */ __libc_lock_define_initialized (static, lock) @@ -161,7 +163,7 @@ internal_setspent (ent_t *ent, int stayopen) enum nss_status status = NSS_STATUS_SUCCESS; ent->first = ent->netgroup = 0; - ent->files = TRUE; + ent->files = true; /* If something was left over free it. */ if (ent->netgroup) @@ -212,11 +214,7 @@ internal_setspent (ent_t *ent, int stayopen) give_spwd_free (&ent->pwd); if (status == NSS_STATUS_SUCCESS && nss_setspent) - { - status = nss_setspent (stayopen); - if (status == NSS_STATUS_UNAVAIL) - status = NSS_STATUS_SUCCESS; - } + ent->setent_status = nss_setspent (stayopen); return status; } @@ -255,8 +253,8 @@ internal_endspent (ent_t *ent) if (ent->netgroup) __internal_endnetgrent (&ent->netgrdata); - ent->first = ent->netgroup = FALSE; - ent->files = TRUE; + ent->first = ent->netgroup = false; + ent->files = true; if (ent->blacklist.data != NULL) { @@ -298,19 +296,23 @@ getspent_next_nss_netgr (const char *name, struct spwd *result, ent_t *ent, if (!nss_getspnam_r) return NSS_STATUS_UNAVAIL; + /* If the setpwent call failed, say so. */ + if (ent->setent_status != NSS_STATUS_SUCCESS) + return ent->setent_status; + if (yp_get_default_domain (&curdomain) != YPERR_SUCCESS) { - ent->netgroup = FALSE; - ent->first = FALSE; + ent->netgroup = false; + ent->first = false; give_spwd_free (&ent->pwd); return NSS_STATUS_UNAVAIL; } - if (ent->first == TRUE) + if (ent->first == true) { memset (&ent->netgrdata, 0, sizeof (struct __netgrent)); __internal_setnetgrent (group, &ent->netgrdata); - ent->first = FALSE; + ent->first = false; } while (1) @@ -325,7 +327,7 @@ getspent_next_nss_netgr (const char *name, struct spwd *result, ent_t *ent, if (status != 1) { __internal_endnetgrent (&ent->netgrdata); - ent->netgroup = FALSE; + ent->netgroup = false; give_spwd_free (&ent->pwd); return NSS_STATUS_RETURN; } @@ -400,6 +402,7 @@ getspent_next_nss (struct spwd *result, ent_t *ent, return NSS_STATUS_SUCCESS; } + /* This function handle the +user entrys in /etc/shadow */ static enum nss_status getspnam_plususer (const char *name, struct spwd *result, ent_t *ent, @@ -440,6 +443,7 @@ getspnam_plususer (const char *name, struct spwd *result, ent_t *ent, return NSS_STATUS_SUCCESS; } + static enum nss_status getspent_next_file (struct spwd *result, ent_t *ent, char *buffer, size_t buflen, int *errnop) @@ -520,8 +524,8 @@ getspent_next_file (struct spwd *result, ent_t *ent, { int status; - ent->netgroup = TRUE; - ent->first = TRUE; + ent->netgroup = true; + ent->first = true; copy_spwd_changes (&ent->pwd, result, NULL, 0); status = getspent_next_nss_netgr (NULL, result, ent, @@ -577,8 +581,8 @@ getspent_next_file (struct spwd *result, ent_t *ent, /* +:... */ if (result->sp_namp[0] == '+' && result->sp_namp[1] == '\0') { - ent->files = FALSE; - ent->first = TRUE; + ent->files = false; + ent->first = true; copy_spwd_changes (&ent->pwd, result, NULL, 0); return getspent_next_nss (result, ent, buffer, buflen, errnop); @@ -613,6 +617,7 @@ internal_getspent_r (struct spwd *pw, ent_t *ent, return getspent_next_nss (pw, ent, buffer, buflen, errnop); } + enum nss_status _nss_compat_getspent_r (struct spwd *pwd, char *buffer, size_t buflen, int *errnop) @@ -636,6 +641,7 @@ _nss_compat_getspent_r (struct spwd *pwd, char *buffer, size_t buflen, return result; } + /* Searches in /etc/passwd and the NIS/NIS+ map for a special user */ static enum nss_status internal_getspnam_r (const char *name, struct spwd *result, ent_t *ent, @@ -778,13 +784,14 @@ internal_getspnam_r (const char *name, struct spwd *result, ent_t *ent, return NSS_STATUS_SUCCESS; } + enum nss_status _nss_compat_getspnam_r (const char *name, struct spwd *pwd, char *buffer, size_t buflen, int *errnop) { enum nss_status result; - ent_t ent = {0, TRUE, 0, NULL, {NULL, 0, 0}, - {NULL, NULL, 0, 0, 0, 0, 0, 0, 0}}; + ent_t ent = { false, true, false, NSS_STATUS_SUCCESS, NULL, { NULL, 0, 0}, + { NULL, NULL, 0, 0, 0, 0, 0, 0, 0}}; if (name[0] == '-' || name[0] == '+') return NSS_STATUS_NOTFOUND; @@ -806,6 +813,7 @@ _nss_compat_getspnam_r (const char *name, struct spwd *pwd, return result; } + /* Support routines for remembering -@netgroup and -user entries. The names are stored in a single string with `|' as separator. */ static void @@ -852,6 +860,7 @@ blacklist_store_name (const char *name, ent_t *ent) return; } + /* Returns TRUE if ent->blacklist contains name, else FALSE. */ static bool_t in_blacklist (const char *name, int namelen, ent_t *ent) @@ -860,7 +869,7 @@ in_blacklist (const char *name, int namelen, ent_t *ent) char *cp; if (ent->blacklist.data == NULL) - return FALSE; + return false; buf[0] = '|'; cp = stpcpy (&buf[1], name); -- cgit v1.2.3