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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.

This commit is contained in:
Ulrich Drepper 2006-07-31 23:33:04 +00:00
parent b894c2ea7e
commit cb62745abd
3 changed files with 85 additions and 72 deletions
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29
nis/nss_compat/compat-grp.c
View File

@ -59,12 +59,13 @@ struct blacklist_t
struct ent_t struct ent_t
{ {
bool_t files; bool_t files;
enum nss_status setent_status;
FILE *stream; FILE *stream;
struct blacklist_t blacklist; struct blacklist_t blacklist;
}; };
typedef struct ent_t ent_t; 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. */ /* Protect global state against multiple changers. */
__libc_lock_define_initialized (static, lock) __libc_lock_define_initialized (static, lock)
@ -89,7 +90,7 @@ init_nss_interface (void)
} }
static enum nss_status 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; enum nss_status status = NSS_STATUS_SUCCESS;
@ -137,12 +138,8 @@ internal_setgrent (ent_t *ent, int stayopen)
else else
rewind (ent->stream); rewind (ent->stream);
if (status == NSS_STATUS_SUCCESS && nss_setgrent) if (needent && status == NSS_STATUS_SUCCESS && nss_setgrent)
{ ent->setent_status = nss_setgrent (stayopen);
status = nss_setgrent (stayopen);
if (status == NSS_STATUS_UNAVAIL)
status = NSS_STATUS_SUCCESS;
}
return status; return status;
} }
@ -158,7 +155,7 @@ _nss_compat_setgrent (int stayopen)
if (ni == NULL) if (ni == NULL)
init_nss_interface (); init_nss_interface ();
result = internal_setgrent (&ext_ent, stayopen); result = internal_setgrent (&ext_ent, stayopen, 1);
__libc_lock_unlock (lock); __libc_lock_unlock (lock);
@ -212,6 +209,10 @@ getgrent_next_nss (struct group *result, ent_t *ent, char *buffer,
if (!nss_getgrent_r) if (!nss_getgrent_r)
return NSS_STATUS_UNAVAIL; return NSS_STATUS_UNAVAIL;
/* If the setgrent call failed, say so. */
if (ent->setent_status != NSS_STATUS_SUCCESS)
return ent->setent_status;
do do
{ {
enum nss_status status; enum nss_status status;
@ -363,7 +364,7 @@ _nss_compat_getgrent_r (struct group *grp, char *buffer, size_t buflen,
init_nss_interface (); init_nss_interface ();
if (ext_ent.stream == NULL) if (ext_ent.stream == NULL)
result = internal_setgrent (&ext_ent, 1); result = internal_setgrent (&ext_ent, 1, 1);
if (result == NSS_STATUS_SUCCESS) if (result == NSS_STATUS_SUCCESS)
{ {
@ -485,7 +486,7 @@ enum nss_status
_nss_compat_getgrnam_r (const char *name, struct group *grp, _nss_compat_getgrnam_r (const char *name, struct group *grp,
char *buffer, size_t buflen, int *errnop) 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; enum nss_status result;
if (name[0] == '-' || name[0] == '+') if (name[0] == '-' || name[0] == '+')
@ -498,7 +499,7 @@ _nss_compat_getgrnam_r (const char *name, struct group *grp,
__libc_lock_unlock (lock); __libc_lock_unlock (lock);
result = internal_setgrent (&ent, 0); result = internal_setgrent (&ent, 0, 0);
if (result == NSS_STATUS_SUCCESS) if (result == NSS_STATUS_SUCCESS)
result = internal_getgrnam_r (name, grp, &ent, buffer, buflen, errnop); 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, _nss_compat_getgrgid_r (gid_t gid, struct group *grp,
char *buffer, size_t buflen, int *errnop) 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; enum nss_status result;
__libc_lock_lock (lock); __libc_lock_lock (lock);
@ -623,7 +624,7 @@ _nss_compat_getgrgid_r (gid_t gid, struct group *grp,
__libc_lock_unlock (lock); __libc_lock_unlock (lock);
result = internal_setgrent (&ent, 0); result = internal_setgrent (&ent, 0, 0);
if (result == NSS_STATUS_SUCCESS) if (result == NSS_STATUS_SUCCESS)
result = internal_getgrgid_r (gid, grp, &ent, buffer, buflen, errnop); result = internal_getgrgid_r (gid, grp, &ent, buffer, buflen, errnop);

69
nis/nss_compat/compat-pwd.c
View File

@ -62,9 +62,10 @@ struct blacklist_t
struct ent_t struct ent_t
{ {
bool_t netgroup; bool netgroup;
bool_t first; bool first;
bool_t files; bool files;
enum nss_status setent_status;
FILE *stream; FILE *stream;
struct blacklist_t blacklist; struct blacklist_t blacklist;
struct passwd pwd; struct passwd pwd;
@ -72,8 +73,9 @@ struct ent_t
}; };
typedef struct ent_t ent_t; typedef struct ent_t ent_t;
static ent_t ext_ent = {0, 0, TRUE, NULL, {NULL, 0, 0}, static ent_t ext_ent = { false, false, true, NSS_STATUS_SUCCESS, NULL,
{NULL, NULL, 0, 0, NULL, NULL, NULL}}; { NULL, 0, 0 },
{ NULL, NULL, 0, 0, NULL, NULL, NULL }};
/* Protect global state against multiple changers. */ /* Protect global state against multiple changers. */
__libc_lock_define_initialized (static, lock) __libc_lock_define_initialized (static, lock)
@ -202,12 +204,13 @@ copy_pwd_changes (struct passwd *dest, struct passwd *src,
} }
static enum nss_status 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; enum nss_status status = NSS_STATUS_SUCCESS;
ent->first = ent->netgroup = FALSE; ent->first = ent->netgroup = false;
ent->files = TRUE; ent->files = true;
ent->setent_status = NSS_STATUS_SUCCESS;
/* If something was left over free it. */ /* If something was left over free it. */
if (ent->netgroup) if (ent->netgroup)
@ -257,12 +260,8 @@ internal_setpwent (ent_t *ent, int stayopen)
give_pwd_free (&ent->pwd); give_pwd_free (&ent->pwd);
if (status == NSS_STATUS_SUCCESS && nss_setpwent) if (needent && status == NSS_STATUS_SUCCESS && nss_setpwent)
{ ent->setent_status = nss_setpwent (stayopen);
status = nss_setpwent (stayopen);
if (status == NSS_STATUS_UNAVAIL)
status = NSS_STATUS_SUCCESS;
}
return status; return status;
} }
@ -278,7 +277,7 @@ _nss_compat_setpwent (int stayopen)
if (ni == NULL) if (ni == NULL)
init_nss_interface (); init_nss_interface ();
result = internal_setpwent (&ext_ent, stayopen); result = internal_setpwent (&ext_ent, stayopen, 1);
__libc_lock_unlock (lock); __libc_lock_unlock (lock);
@ -301,7 +300,7 @@ internal_endpwent (ent_t *ent)
if (ent->netgroup) if (ent->netgroup)
__internal_endnetgrent (&ent->netgrdata); __internal_endnetgrent (&ent->netgrdata);
ent->first = ent->netgroup = FALSE; ent->first = ent->netgroup = false;
if (ent->blacklist.data != NULL) 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) if (yp_get_default_domain (&curdomain) != YPERR_SUCCESS)
{ {
ent->netgroup = FALSE; ent->netgroup = false;
ent->first = FALSE; ent->first = false;
give_pwd_free (&ent->pwd); give_pwd_free (&ent->pwd);
return NSS_STATUS_UNAVAIL; return NSS_STATUS_UNAVAIL;
} }
if (ent->first == TRUE) if (ent->first == true)
{ {
memset (&ent->netgrdata, 0, sizeof (struct __netgrent)); memset (&ent->netgrdata, 0, sizeof (struct __netgrent));
__internal_setnetgrent (group, &ent->netgrdata); __internal_setnetgrent (group, &ent->netgrdata);
ent->first = FALSE; ent->first = false;
} }
while (1) while (1)
@ -427,6 +426,10 @@ getpwent_next_nss (struct passwd *result, ent_t *ent, char *buffer,
if (!nss_getpwent_r) if (!nss_getpwent_r)
return NSS_STATUS_UNAVAIL; 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); p2len = pwd_need_buflen (&ent->pwd);
if (p2len > buflen) if (p2len > buflen)
{ {
@ -437,7 +440,7 @@ getpwent_next_nss (struct passwd *result, ent_t *ent, char *buffer,
buflen -= p2len; buflen -= p2len;
if (ent->first) if (ent->first)
ent->first = FALSE; ent->first = false;
do do
{ {
@ -570,8 +573,8 @@ getpwent_next_file (struct passwd *result, ent_t *ent,
{ {
enum nss_status status; enum nss_status status;
ent->netgroup = TRUE; ent->netgroup = true;
ent->first = TRUE; ent->first = true;
copy_pwd_changes (&ent->pwd, result, NULL, 0); copy_pwd_changes (&ent->pwd, result, NULL, 0);
status = getpwent_next_nss_netgr (NULL, result, ent, 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') if (result->pw_name[0] == '+' && result->pw_name[1] == '\0')
{ {
ent->files = FALSE; ent->files = false;
ent->first = TRUE; ent->first = true;
copy_pwd_changes (&ent->pwd, result, NULL, 0); copy_pwd_changes (&ent->pwd, result, NULL, 0);
return getpwent_next_nss (result, ent, buffer, buflen, errnop); 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 (); init_nss_interface ();
if (ext_ent.stream == NULL) if (ext_ent.stream == NULL)
result = internal_setpwent (&ext_ent, 1); result = internal_setpwent (&ext_ent, 1, 1);
if (result == NSS_STATUS_SUCCESS) if (result == NSS_STATUS_SUCCESS)
result = internal_getpwent_r (pwd, &ext_ent, buffer, buflen, errnop); 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) char *buffer, size_t buflen, int *errnop)
{ {
enum nss_status result; enum nss_status result;
ent_t ent = {0, 0, TRUE, NULL, {NULL, 0, 0}, ent_t ent = { false, false, true, NSS_STATUS_SUCCESS, NULL, { NULL, 0, 0 },
{NULL, NULL, 0, 0, NULL, NULL, NULL}}; { NULL, NULL, 0, 0, NULL, NULL, NULL }};
if (name[0] == '-' || name[0] == '+') if (name[0] == '-' || name[0] == '+')
return NSS_STATUS_NOTFOUND; return NSS_STATUS_NOTFOUND;
@ -840,7 +843,7 @@ _nss_compat_getpwnam_r (const char *name, struct passwd *pwd,
__libc_lock_unlock (lock); __libc_lock_unlock (lock);
result = internal_setpwent (&ent, 0); result = internal_setpwent (&ent, 0, 0);
if (result == NSS_STATUS_SUCCESS) if (result == NSS_STATUS_SUCCESS)
result = internal_getpwnam_r (name, pwd, &ent, buffer, buflen, errnop); 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) char *buffer, size_t buflen, int *errnop)
{ {
enum nss_status result; enum nss_status result;
ent_t ent = {0, 0, TRUE, NULL, {NULL, 0, 0}, ent_t ent = { false, false, true, NSS_STATUS_SUCCESS, NULL, { NULL, 0, 0 },
{NULL, NULL, 0, 0, NULL, NULL, NULL}}; { NULL, NULL, 0, 0, NULL, NULL, NULL }};
__libc_lock_lock (lock); __libc_lock_lock (lock);
@ -1079,7 +1082,7 @@ _nss_compat_getpwuid_r (uid_t uid, struct passwd *pwd,
__libc_lock_unlock (lock); __libc_lock_unlock (lock);
result = internal_setpwent (&ent, 0); result = internal_setpwent (&ent, 0, 0);
if (result == NSS_STATUS_SUCCESS) if (result == NSS_STATUS_SUCCESS)
result = internal_getpwuid_r (uid, pwd, &ent, buffer, buflen, errnop); result = internal_getpwuid_r (uid, pwd, &ent, buffer, buflen, errnop);
@ -1136,7 +1139,7 @@ blacklist_store_name (const char *name, ent_t *ent)
return; return;
} }
/* returns TRUE if ent->blacklist contains name, else FALSE */ /* Returns TRUE if ent->blacklist contains name, else FALSE. */
static bool_t static bool_t
in_blacklist (const char *name, int namelen, ent_t *ent) in_blacklist (const char *name, int namelen, ent_t *ent)
{ {

59
nis/nss_compat/compat-spwd.c
View File

@ -59,9 +59,10 @@ struct blacklist_t
struct ent_t struct ent_t
{ {
bool_t netgroup; bool netgroup;
bool_t files; bool files;
bool_t first; bool first;
enum nss_status setent_status;
FILE *stream; FILE *stream;
struct blacklist_t blacklist; struct blacklist_t blacklist;
struct spwd pwd; struct spwd pwd;
@ -69,8 +70,9 @@ struct ent_t
}; };
typedef struct ent_t ent_t; typedef struct ent_t ent_t;
static ent_t ext_ent = {0, TRUE, 0, NULL, {NULL, 0, 0}, static ent_t ext_ent = { false, true, false, NSS_STATUS_SUCCESS, NULL,
{NULL, NULL, 0, 0, 0, 0, 0, 0, 0}}; { NULL, 0, 0},
{ NULL, NULL, 0, 0, 0, 0, 0, 0, 0}};
/* Protect global state against multiple changers. */ /* Protect global state against multiple changers. */
__libc_lock_define_initialized (static, lock) __libc_lock_define_initialized (static, lock)
@ -161,7 +163,7 @@ internal_setspent (ent_t *ent, int stayopen)
enum nss_status status = NSS_STATUS_SUCCESS; enum nss_status status = NSS_STATUS_SUCCESS;
ent->first = ent->netgroup = 0; ent->first = ent->netgroup = 0;
ent->files = TRUE; ent->files = true;
/* If something was left over free it. */ /* If something was left over free it. */
if (ent->netgroup) if (ent->netgroup)
@ -212,11 +214,7 @@ internal_setspent (ent_t *ent, int stayopen)
give_spwd_free (&ent->pwd); give_spwd_free (&ent->pwd);
if (status == NSS_STATUS_SUCCESS && nss_setspent) if (status == NSS_STATUS_SUCCESS && nss_setspent)
{ ent->setent_status = nss_setspent (stayopen);
status = nss_setspent (stayopen);
if (status == NSS_STATUS_UNAVAIL)
status = NSS_STATUS_SUCCESS;
}
return status; return status;
} }
@ -255,8 +253,8 @@ internal_endspent (ent_t *ent)
if (ent->netgroup) if (ent->netgroup)
__internal_endnetgrent (&ent->netgrdata); __internal_endnetgrent (&ent->netgrdata);
ent->first = ent->netgroup = FALSE; ent->first = ent->netgroup = false;
ent->files = TRUE; ent->files = true;
if (ent->blacklist.data != NULL) 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) if (!nss_getspnam_r)
return NSS_STATUS_UNAVAIL; 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) if (yp_get_default_domain (&curdomain) != YPERR_SUCCESS)
{ {
ent->netgroup = FALSE; ent->netgroup = false;
ent->first = FALSE; ent->first = false;
give_spwd_free (&ent->pwd); give_spwd_free (&ent->pwd);
return NSS_STATUS_UNAVAIL; return NSS_STATUS_UNAVAIL;
} }
if (ent->first == TRUE) if (ent->first == true)
{ {
memset (&ent->netgrdata, 0, sizeof (struct __netgrent)); memset (&ent->netgrdata, 0, sizeof (struct __netgrent));
__internal_setnetgrent (group, &ent->netgrdata); __internal_setnetgrent (group, &ent->netgrdata);
ent->first = FALSE; ent->first = false;
} }
while (1) while (1)
@ -325,7 +327,7 @@ getspent_next_nss_netgr (const char *name, struct spwd *result, ent_t *ent,
if (status != 1) if (status != 1)
{ {
__internal_endnetgrent (&ent->netgrdata); __internal_endnetgrent (&ent->netgrdata);
ent->netgroup = FALSE; ent->netgroup = false;
give_spwd_free (&ent->pwd); give_spwd_free (&ent->pwd);
return NSS_STATUS_RETURN; return NSS_STATUS_RETURN;
} }
@ -400,6 +402,7 @@ getspent_next_nss (struct spwd *result, ent_t *ent,
return NSS_STATUS_SUCCESS; return NSS_STATUS_SUCCESS;
} }
/* This function handle the +user entrys in /etc/shadow */ /* This function handle the +user entrys in /etc/shadow */
static enum nss_status static enum nss_status
getspnam_plususer (const char *name, struct spwd *result, ent_t *ent, 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; return NSS_STATUS_SUCCESS;
} }
static enum nss_status static enum nss_status
getspent_next_file (struct spwd *result, ent_t *ent, getspent_next_file (struct spwd *result, ent_t *ent,
char *buffer, size_t buflen, int *errnop) char *buffer, size_t buflen, int *errnop)
@ -520,8 +524,8 @@ getspent_next_file (struct spwd *result, ent_t *ent,
{ {
int status; int status;
ent->netgroup = TRUE; ent->netgroup = true;
ent->first = TRUE; ent->first = true;
copy_spwd_changes (&ent->pwd, result, NULL, 0); copy_spwd_changes (&ent->pwd, result, NULL, 0);
status = getspent_next_nss_netgr (NULL, result, ent, 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') if (result->sp_namp[0] == '+' && result->sp_namp[1] == '\0')
{ {
ent->files = FALSE; ent->files = false;
ent->first = TRUE; ent->first = true;
copy_spwd_changes (&ent->pwd, result, NULL, 0); copy_spwd_changes (&ent->pwd, result, NULL, 0);
return getspent_next_nss (result, ent, buffer, buflen, errnop); 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); return getspent_next_nss (pw, ent, buffer, buflen, errnop);
} }
enum nss_status enum nss_status
_nss_compat_getspent_r (struct spwd *pwd, char *buffer, size_t buflen, _nss_compat_getspent_r (struct spwd *pwd, char *buffer, size_t buflen,
int *errnop) int *errnop)
@ -636,6 +641,7 @@ _nss_compat_getspent_r (struct spwd *pwd, char *buffer, size_t buflen,
return result; return result;
} }
/* Searches in /etc/passwd and the NIS/NIS+ map for a special user */ /* Searches in /etc/passwd and the NIS/NIS+ map for a special user */
static enum nss_status static enum nss_status
internal_getspnam_r (const char *name, struct spwd *result, ent_t *ent, 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; return NSS_STATUS_SUCCESS;
} }
enum nss_status enum nss_status
_nss_compat_getspnam_r (const char *name, struct spwd *pwd, _nss_compat_getspnam_r (const char *name, struct spwd *pwd,
char *buffer, size_t buflen, int *errnop) char *buffer, size_t buflen, int *errnop)
{ {
enum nss_status result; enum nss_status result;
ent_t ent = {0, TRUE, 0, NULL, {NULL, 0, 0}, ent_t ent = { false, true, false, NSS_STATUS_SUCCESS, NULL, { NULL, 0, 0},
{NULL, NULL, 0, 0, 0, 0, 0, 0, 0}}; { NULL, NULL, 0, 0, 0, 0, 0, 0, 0}};
if (name[0] == '-' || name[0] == '+') if (name[0] == '-' || name[0] == '+')
return NSS_STATUS_NOTFOUND; return NSS_STATUS_NOTFOUND;
@ -806,6 +813,7 @@ _nss_compat_getspnam_r (const char *name, struct spwd *pwd,
return result; return result;
} }
/* Support routines for remembering -@netgroup and -user entries. /* Support routines for remembering -@netgroup and -user entries.
The names are stored in a single string with `|' as separator. */ The names are stored in a single string with `|' as separator. */
static void static void
@ -852,6 +860,7 @@ blacklist_store_name (const char *name, ent_t *ent)
return; return;
} }
/* Returns TRUE if ent->blacklist contains name, else FALSE. */ /* Returns TRUE if ent->blacklist contains name, else FALSE. */
static bool_t static bool_t
in_blacklist (const char *name, int namelen, ent_t *ent) 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; char *cp;
if (ent->blacklist.data == NULL) if (ent->blacklist.data == NULL)
return FALSE; return false;
buf[0] = '|'; buf[0] = '|';
cp = stpcpy (&buf[1], name); cp = stpcpy (&buf[1], name);