aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--ChangeLog15
-rw-r--r--nis/nss-nis.h20
-rw-r--r--nis/nss_nis/nis-grp.c77
-rw-r--r--nis/nss_nis/nis-initgroups.c94
-rw-r--r--nis/nss_nis/nis-pwd.c45
-rw-r--r--nis/nss_nis/nis-rpc.c114
-rw-r--r--nis/nss_nis/nis-service.c75
-rw-r--r--nis/nss_nis/nis-spwd.c2
8 files changed, 153 insertions, 289 deletions
diff --git a/ChangeLog b/ChangeLog
index 8938794f1b..5198fa2a57 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,20 @@
2006-04-28 Ulrich Drepper <drepper@redhat.com>
+ * nis/nss_nis/nis-spwd.c (internal_nis_getspent_r): Remove data
+ variable.
+
+ * nis/nss-nis.h: Define response_t and intern_t. Declare _nis_saveit.
+ * nis/nss_nis/nis-pwd.c: Remove response_t and intern_t definition.
+ (saveit): Renamed to _nis_saveit. Take parameter which is pointer
+ to the intern_t object. Change all users.
+ * nis/nss_nis/nis-grp.c: Remove response_t, intern_t, and saveit
+ definition. Use _nis_saveit instead of saveit.
+ * nis/nss_nis/nis-service.c: Likewise.
+ * nis/nss_nis/nis-initgroups.c: Likewise.
+ (internal_setgrent): Adjust for buffer handling.
+ (internal_getgrent_r): Likewise.
+ * nis/nss_nis/nis-rpc.c: Likewise.
+
* nis/nss-default.c (vars): Add SETENT_BATCH_READ.
* nis/nss: Document SETENT_BATCH_READ.
* nis/libnsl.h: Define NSS_FLAG_SETENT_BATCH_READ.
diff --git a/nis/nss-nis.h b/nis/nss-nis.h
index cdf34c648f..5ac968e28e 100644
--- a/nis/nss-nis.h
+++ b/nis/nss-nis.h
@@ -36,4 +36,24 @@ yperr2nss (int errval)
return __yperr2nss_tab[(unsigned int) errval];
}
+
+struct response_t
+{
+ struct response_t *next;
+ size_t size;
+ char mem[0];
+};
+
+typedef struct intern_t
+{
+ struct response_t *start;
+ struct response_t *next;
+ size_t offset;
+} intern_t;
+
+
+extern int _nis_saveit (int instatus, char *inkey, int inkeylen, char *inval,
+ int invallen, char *indata) attribute_hidden;
+
+
#endif /* nis/nss-nis.h */
diff --git a/nis/nss_nis/nis-grp.c b/nis/nss_nis/nis-grp.c
index 10af019492..ce642c484f 100644
--- a/nis/nss_nis/nis-grp.c
+++ b/nis/nss_nis/nis-grp.c
@@ -41,82 +41,9 @@ __libc_lock_define_initialized (static, lock)
static bool_t new_start = 1;
static char *oldkey;
static int oldkeylen;
-
-struct response_t
-{
- struct response_t *next;
- size_t size;
- char mem[0];
-};
-
-typedef struct intern_t
-{
- struct response_t *start;
- struct response_t *next;
- size_t offset;
-} intern_t;
-
static intern_t intern;
-static int
-saveit (int instatus, char *inkey, int inkeylen, char *inval,
- int invallen, char *indata)
-{
- if (instatus != YP_TRUE)
- return 1;
-
- if (inkey && inkeylen > 0 && inval && invallen > 0)
- {
- struct response_t *bucket = intern.next;
-
- if (__builtin_expect (bucket == NULL, 0))
- {
-#define MINSIZE 4096 - 4 * sizeof (void *)
- const size_t minsize = MAX (MINSIZE, 2 * (invallen + 1));
- bucket = malloc (sizeof (struct response_t) + minsize);
- if (bucket == NULL)
- /* We have no error code for out of memory. */
- return 1;
-
- bucket->next = NULL;
- bucket->size = minsize;
- intern.start = intern.next = bucket;
- intern.offset = 0;
- }
- else if (__builtin_expect (invallen + 1 > bucket->size - intern.offset,
- 0))
- {
- /* We need a new (larger) buffer. */
- const size_t newsize = 2 * MAX (bucket->size, invallen + 1);
- struct response_t *newp = malloc (sizeof (struct response_t)
- + newsize);
- if (newp == NULL)
- /* We have no error code for out of memory. */
- return 1;
-
- /* Mark the old bucket as full. */
- bucket->size = intern.offset;
-
- newp->next = NULL;
- newp->size = newsize;
- bucket = intern.next = bucket->next = newp;
- intern.offset = 0;
- }
-
- char *p = mempcpy (&bucket->mem[intern.offset], inval, invallen);
- if (__builtin_expect (p[-1] != '\0', 0))
- {
- *p = '\0';
- ++invallen;
- }
- intern.offset += invallen;
- }
-
- return 0;
-}
-
-
static void
internal_nis_endgrent (void)
{
@@ -164,8 +91,8 @@ internal_nis_setgrent (void)
struct ypall_callback ypcb;
- ypcb.foreach = saveit;
- ypcb.data = NULL;
+ ypcb.foreach = _nis_saveit;
+ ypcb.data = (char *) &intern;
enum nss_status status = yperr2nss (yp_all (domain, "group.byname", &ypcb));
diff --git a/nis/nss_nis/nis-initgroups.c b/nis/nss_nis/nis-initgroups.c
index 647adf5119..a5a3ba6144 100644
--- a/nis/nss_nis/nis-initgroups.c
+++ b/nis/nss_nis/nis-initgroups.c
@@ -38,47 +38,6 @@
#define EXTERN_PARSER
#include <nss/nss_files/files-parse.c>
-struct response_t
-{
- struct response_t *next;
- char val[0];
-};
-
-struct intern_t
-{
- struct response_t *start;
- struct response_t *next;
-};
-typedef struct intern_t intern_t;
-
-static int
-saveit (int instatus, char *inkey, int inkeylen, char *inval,
- int invallen, char *indata)
-{
- intern_t *intern = (intern_t *) indata;
-
- if (instatus != YP_TRUE)
- return 1;
-
- if (inkey && inkeylen > 0 && inval && invallen > 0)
- {
- struct response_t *newp = malloc (sizeof (struct response_t)
- + invallen + 1);
- if (newp == NULL)
- return 1; /* We have no error code for out of memory */
-
- if (intern->start == NULL)
- intern->start = newp;
- else
- intern->next->next = newp;
- intern->next = newp;
-
- newp->next = NULL;
- *((char *) mempcpy (newp->val, inval, invallen)) = '\0';
- }
-
- return 0;
-}
static enum nss_status
internal_setgrent (char *domainname, intern_t *intern)
@@ -86,16 +45,21 @@ internal_setgrent (char *domainname, intern_t *intern)
struct ypall_callback ypcb;
enum nss_status status;
- intern->start = NULL;
-
- ypcb.foreach = saveit;
+ ypcb.foreach = _nis_saveit;
ypcb.data = (char *) intern;
status = yperr2nss (yp_all (domainname, "group.byname", &ypcb));
+
+ /* Mark the last buffer as full. */
+ if (intern->next != NULL)
+ intern->next->size = intern->offset;
+
intern->next = intern->start;
+ intern->offset = 0;
return status;
}
+
static enum nss_status
internal_getgrent_r (struct group *grp, char *buffer, size_t buflen,
int *errnop, intern_t *intern)
@@ -107,18 +71,46 @@ internal_getgrent_r (struct group *grp, char *buffer, size_t buflen,
int parse_res;
do
{
- if (intern->next == NULL)
- return NSS_STATUS_NOTFOUND;
+ struct response_t *bucket = intern->next;
+
+ if (__builtin_expect (intern->offset >= bucket->size, 0))
+ {
+ if (bucket->next == NULL)
+ return NSS_STATUS_NOTFOUND;
+
+ /* We look at all the content in the current bucket. Go on
+ to the next. */
+ bucket = intern->next = bucket->next;
+ intern->offset = 0;
+ }
- char *p = strncpy (buffer, intern->next->val, buflen);
- while (isspace (*p))
- ++p;
+ char *p;
+ for (p = &bucket->mem[intern->offset]; isspace (*p); ++p)
+ ++intern->offset;
+
+ size_t len = strlen (p) + 1;
+ if (__builtin_expect (len > buflen, 0))
+ {
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ /* We unfortunately have to copy the data in the user-provided
+ buffer because that buffer might be around for a very long
+ time and the servent structure must remain valid. If we would
+ rely on the BUCKET memory the next 'setservent' or 'endservent'
+ call would destroy it.
+
+ The important thing is that it is a single NUL-terminated
+ string. This is what the parsing routine expects. */
+ p = memcpy (buffer, &bucket->mem[intern->offset], len);
parse_res = _nss_files_parse_grent (p, grp, (void *) buffer, buflen,
errnop);
if (__builtin_expect (parse_res == -1, 0))
return NSS_STATUS_TRYAGAIN;
- intern->next = intern->next->next;
+
+ intern->offset += len;
}
while (!parse_res);
@@ -259,7 +251,7 @@ _nss_nis_initgroups_dyn (const char *user, gid_t group, long int *start,
size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
char *tmpbuf;
enum nss_status status;
- intern_t intern = { NULL, NULL };
+ intern_t intern = { NULL, NULL, 0 };
gid_t *groups = *groupsp;
status = internal_setgrent (domainname, &intern);
diff --git a/nis/nss_nis/nis-pwd.c b/nis/nss_nis/nis-pwd.c
index a996b042c4..7972118c84 100644
--- a/nis/nss_nis/nis-pwd.c
+++ b/nis/nss_nis/nis-pwd.c
@@ -42,34 +42,21 @@ __libc_lock_define_initialized (static, lock)
static bool_t new_start = 1;
static char *oldkey;
static int oldkeylen;
-
-struct response_t
-{
- struct response_t *next;
- size_t size;
- char mem[0];
-};
-
-typedef struct intern_t
-{
- struct response_t *start;
- struct response_t *next;
- size_t offset;
-} intern_t;
-
static intern_t intern;
-static int
-saveit (int instatus, char *inkey, int inkeylen, char *inval,
- int invallen, char *indata)
+int
+_nis_saveit (int instatus, char *inkey, int inkeylen, char *inval,
+ int invallen, char *indata)
{
+ intern_t *intern = (intern_t *) indata;
+
if (instatus != YP_TRUE)
return 1;
if (inkey && inkeylen > 0 && inval && invallen > 0)
{
- struct response_t *bucket = intern.next;
+ struct response_t *bucket = intern->next;
if (__builtin_expect (bucket == NULL, 0))
{
@@ -82,10 +69,10 @@ saveit (int instatus, char *inkey, int inkeylen, char *inval,
bucket->next = NULL;
bucket->size = minsize;
- intern.start = intern.next = bucket;
- intern.offset = 0;
+ intern->start = intern->next = bucket;
+ intern->offset = 0;
}
- else if (__builtin_expect (invallen + 1 > bucket->size - intern.offset,
+ else if (__builtin_expect (invallen + 1 > bucket->size - intern->offset,
0))
{
/* We need a new (larger) buffer. */
@@ -97,21 +84,21 @@ saveit (int instatus, char *inkey, int inkeylen, char *inval,
return 1;
/* Mark the old bucket as full. */
- bucket->size = intern.offset;
+ bucket->size = intern->offset;
newp->next = NULL;
newp->size = newsize;
- bucket = intern.next = bucket->next = newp;
- intern.offset = 0;
+ bucket = intern->next = bucket->next = newp;
+ intern->offset = 0;
}
- char *p = mempcpy (&bucket->mem[intern.offset], inval, invallen);
+ char *p = mempcpy (&bucket->mem[intern->offset], inval, invallen);
if (__builtin_expect (p[-1] != '\0', 0))
{
*p = '\0';
++invallen;
}
- intern.offset += invallen;
+ intern->offset += invallen;
}
return 0;
@@ -165,8 +152,8 @@ internal_nis_setpwent (void)
struct ypall_callback ypcb;
- ypcb.foreach = saveit;
- ypcb.data = NULL;
+ ypcb.foreach = _nis_saveit;
+ ypcb.data = (char *) &intern;
enum nss_status status = yperr2nss (yp_all (domain, "passwd.byname", &ypcb));
diff --git a/nis/nss_nis/nis-rpc.c b/nis/nss_nis/nis-rpc.c
index 162f3572bf..e7049ffa9f 100644
--- a/nis/nss_nis/nis-rpc.c
+++ b/nis/nss_nis/nis-rpc.c
@@ -36,59 +36,22 @@
__libc_lock_define_initialized (static, lock)
-struct response_t
-{
- struct response_t *next;
- char val[0];
-};
-
-struct intern_t
-{
- struct response_t *start;
- struct response_t *next;
-};
-typedef struct intern_t intern_t;
-
-static intern_t intern = {NULL, NULL};
+static intern_t intern;
-static int
-saveit (int instatus, char *inkey, int inkeylen, char *inval,
- int invallen, char *indata)
-{
- intern_t *intern = (intern_t *) indata;
-
- if (instatus != YP_TRUE)
- return 1;
-
- if (inkey && inkeylen > 0 && inval && invallen > 0)
- {
- struct response_t *newp = malloc (sizeof (struct response_t)
- + invallen + 1);
- if (newp == NULL)
- return 1; /* We have no error code for out of memory */
-
- if (intern->start == NULL)
- intern->start = newp;
- else
- intern->next->next = newp;
- intern->next = newp;
-
- newp->next = NULL;
- *((char *) mempcpy (newp->val, inval, invallen)) = '\0';
- }
-
- return 0;
-}
static void
internal_nis_endrpcent (intern_t *intern)
{
- while (intern->start != NULL)
+ struct response_t *curr = intern->next;
+
+ while (curr != NULL)
{
- intern->next = intern->start;
- intern->start = intern->start->next;
- free (intern->next);
+ struct response_t *last = curr;
+ curr = curr->next;
+ free (last);
}
+
+ intern->next = intern->start = NULL;
}
static enum nss_status
@@ -103,10 +66,16 @@ internal_nis_setrpcent (intern_t *intern)
internal_nis_endrpcent (intern);
- ypcb.foreach = saveit;
- ypcb.data = (char *)intern;
- status = yperr2nss (yp_all(domainname, "rpc.bynumber", &ypcb));
+ ypcb.foreach = _nis_saveit;
+ ypcb.data = (char *) intern;
+ status = yperr2nss (yp_all (domainname, "rpc.bynumber", &ypcb));
+
+ /* Mark the last buffer as full. */
+ if (intern->next != NULL)
+ intern->next->size = intern->offset;
+
intern->next = intern->start;
+ intern->offset = 0;
return status;
}
@@ -139,29 +108,56 @@ _nss_nis_endrpcent (void)
static enum nss_status
internal_nis_getrpcent_r (struct rpcent *rpc, char *buffer, size_t buflen,
- int *errnop, intern_t *data)
+ int *errnop, intern_t *intern)
{
struct parser_data *pdata = (void *) buffer;
int parse_res;
char *p;
- if (data->start == NULL)
- internal_nis_setrpcent (data);
+ if (intern->start == NULL)
+ internal_nis_setrpcent (intern);
/* Get the next entry until we found a correct one. */
do
{
- if (data->next == NULL)
- return NSS_STATUS_NOTFOUND;
+ struct response_t *bucket = intern->next;
+
+ if (__builtin_expect (intern->offset >= bucket->size, 0))
+ {
+ if (bucket->next == NULL)
+ return NSS_STATUS_NOTFOUND;
+
+ /* We look at all the content in the current bucket. Go on
+ to the next. */
+ bucket = intern->next = bucket->next;
+ intern->offset = 0;
+ }
+
+ for (p = &bucket->mem[intern->offset]; isspace (*p); ++p)
+ ++intern->offset;
- p = strncpy (buffer, data->next->val, buflen);
- while (isspace (*p))
- ++p;
+ size_t len = strlen (p) + 1;
+ if (__builtin_expect (len > buflen, 0))
+ {
+ *errnop = ERANGE;
+ return NSS_STATUS_TRYAGAIN;
+ }
+
+ /* We unfortunately have to copy the data in the user-provided
+ buffer because that buffer might be around for a very long
+ time and the servent structure must remain valid. If we would
+ rely on the BUCKET memory the next 'setservent' or 'endservent'
+ call would destroy it.
+
+ The important thing is that it is a single NUL-terminated
+ string. This is what the parsing routine expects. */
+ p = memcpy (buffer, &bucket->mem[intern->offset], len);
parse_res = _nss_files_parse_rpcent (p, rpc, pdata, buflen, errnop);
if (__builtin_expect (parse_res == -1, 0))
return NSS_STATUS_TRYAGAIN;
- data->next = data->next->next;
+
+ intern->offset += len;
}
while (!parse_res);
@@ -193,7 +189,7 @@ _nss_nis_getrpcbyname_r (const char *name, struct rpcent *rpc,
return NSS_STATUS_UNAVAIL;
}
- intern_t data = { NULL, NULL };
+ intern_t data = { NULL, NULL, 0 };
enum nss_status status = internal_nis_setrpcent (&data);
if (__builtin_expect (status != NSS_STATUS_SUCCESS, 0))
return status;
diff --git a/nis/nss_nis/nis-service.c b/nis/nss_nis/nis-service.c
index f705ff77cf..cb728335f9 100644
--- a/nis/nss_nis/nis-service.c
+++ b/nis/nss_nis/nis-service.c
@@ -37,20 +37,6 @@
__libc_lock_define_initialized (static, lock)
-struct response_t
-{
- struct response_t *next;
- size_t size;
- char mem[0];
-};
-
-typedef struct intern_t
-{
- struct response_t *start;
- struct response_t *next;
- size_t offset;
-} intern_t;
-
static intern_t intern;
struct search_t
@@ -66,63 +52,6 @@ struct search_t
};
static int
-saveit (int instatus, char *inkey, int inkeylen, char *inval,
- int invallen, char *indata)
-{
- if (instatus != YP_TRUE)
- return 1;
-
- if (inkey && inkeylen > 0 && inval && invallen > 0)
- {
- struct response_t *bucket = intern.next;
-
- if (__builtin_expect (bucket == NULL, 0))
- {
-#define MINSIZE 4096 - 4 * sizeof (void *)
- const size_t minsize = MAX (MINSIZE, 2 * (invallen + 1));
- bucket = malloc (sizeof (struct response_t) + minsize);
- if (bucket == NULL)
- /* We have no error code for out of memory. */
- return 1;
-
- bucket->next = NULL;
- bucket->size = minsize;
- intern.start = intern.next = bucket;
- intern.offset = 0;
- }
- else if (__builtin_expect (invallen + 1 > bucket->size - intern.offset,
- 0))
- {
- /* We need a new (larger) buffer. */
- const size_t newsize = 2 * MAX (bucket->size, invallen + 1);
- struct response_t *newp = malloc (sizeof (struct response_t)
- + newsize);
- if (newp == NULL)
- /* We have no error code for out of memory. */
- return 1;
-
- /* Mark the old bucket as full. */
- bucket->size = intern.offset;
-
- newp->next = NULL;
- newp->size = newsize;
- bucket = intern.next = bucket->next = newp;
- intern.offset = 0;
- }
-
- char *p = mempcpy (&bucket->mem[intern.offset], inval, invallen);
- if (__builtin_expect (p[-1] != '\0', 0))
- {
- *p = '\0';
- ++invallen;
- }
- intern.offset += invallen;
- }
-
- return 0;
-}
-
-static int
dosearch (int instatus, char *inkey, int inkeylen, char *inval,
int invallen, char *indata)
{
@@ -220,8 +149,8 @@ internal_nis_setservent (void)
internal_nis_endservent ();
- ypcb.foreach = saveit;
- ypcb.data = NULL;
+ ypcb.foreach = _nis_saveit;
+ ypcb.data = (char *) &intern;
status = yperr2nss (yp_all (domainname, "services.byname", &ypcb));
/* Mark the last buffer as full. */
diff --git a/nis/nss_nis/nis-spwd.c b/nis/nss_nis/nis-spwd.c
index 820bfb25e5..0fc4e17c42 100644
--- a/nis/nss_nis/nis-spwd.c
+++ b/nis/nss_nis/nis-spwd.c
@@ -68,8 +68,6 @@ static enum nss_status
internal_nis_getspent_r (struct spwd *sp, char *buffer, size_t buflen,
int *errnop)
{
- struct parser_data *data = (void *) buffer;
-
char *domain;
if (__builtin_expect (yp_get_default_domain (&domain), 0))
return NSS_STATUS_UNAVAIL;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 08:12:07 +0000