diff options
Diffstat (limited to 'nss')
| -rw-r--r-- | nss/digits_dots.c | 21 | ||||
| -rw-r--r-- | nss/getXXbyYY.c | 28 | ||||
| -rw-r--r-- | nss/getXXbyYY_r.c | 34 | ||||
| -rw-r--r-- | nss/getnssent_r.c | 42 | ||||
| -rw-r--r-- | nss/nsswitch.h | 10 |
5 files changed, 105 insertions, 30 deletions
diff --git a/nss/digits_dots.c b/nss/digits_dots.c index 8dcbf9eb0a..0c1fa97e39 100644 --- a/nss/digits_dots.c +++ b/nss/digits_dots.c @@ -23,6 +23,7 @@ #include <ctype.h> #include <wctype.h> #include <resolv/resolv-internal.h> +#include <resolv/resolv_context.h> #include <netdb.h> #include <arpa/inet.h> #include "nsswitch.h" @@ -38,11 +39,10 @@ __nss_hostname_digits_dots (const char *name, struct hostent *resbuf, size_t buflen, struct hostent **result, enum nss_status *status, int af, int *h_errnop) { - int save; - /* We have to test for the use of IPv6 which can only be done by examining `_res'. */ - if (__res_maybe_init (&_res, 0) == -1) + struct resolv_context *ctx = __resolv_context_get (); + if (ctx == NULL) { if (h_errnop) *h_errnop = NETDB_INTERNAL; @@ -52,6 +52,21 @@ __nss_hostname_digits_dots (const char *name, struct hostent *resbuf, *result = NULL; return -1; } + int ret = __nss_hostname_digits_dots_context + (ctx, name, resbuf, buffer, buffer_size, buflen, + result, status, af, h_errnop); + __resolv_context_put (ctx); + return ret; +} + +int +__nss_hostname_digits_dots_context (struct resolv_context *ctx, + const char *name, struct hostent *resbuf, + char **buffer, size_t *buffer_size, + size_t buflen, struct hostent **result, + enum nss_status *status, int af, int *h_errnop) +{ + int save; /* * disallow names consisting only of digits/dots, unless diff --git a/nss/getXXbyYY.c b/nss/getXXbyYY.c index d027b14250..a439b816f7 100644 --- a/nss/getXXbyYY.c +++ b/nss/getXXbyYY.c @@ -47,6 +47,11 @@ |* *| \*******************************************************************/ + +#ifdef HANDLE_DIGITS_DOTS +# include <resolv/resolv_context.h> +#endif + /* To make the real sources a bit prettier. */ #define REENTRANT_NAME APPEND_R (FUNCTION_NAME) #define APPEND_R(name) APPEND_R1 (name) @@ -93,6 +98,19 @@ FUNCTION_NAME (ADD_PARAMS) int h_errno_tmp = 0; #endif +#ifdef HANDLE_DIGITS_DOTS + /* Wrap both __nss_hostname_digits_dots and the actual lookup + function call in the same context. */ + struct resolv_context *res_ctx = __resolv_context_get (); + if (res_ctx == NULL) + { +# if NEED_H_ERRNO + __set_h_errno (NETDB_INTERNAL); +# endif + return NULL; + } +#endif + /* Get lock. */ __libc_lock_lock (lock); @@ -105,9 +123,9 @@ FUNCTION_NAME (ADD_PARAMS) #ifdef HANDLE_DIGITS_DOTS if (buffer != NULL) { - if (__nss_hostname_digits_dots (name, &resbuf, &buffer, - &buffer_size, 0, &result, NULL, AF_VAL, - H_ERRNO_VAR_P)) + if (__nss_hostname_digits_dots_context + (res_ctx, name, &resbuf, &buffer, &buffer_size, 0, &result, NULL, + AF_VAL, H_ERRNO_VAR_P)) goto done; } #endif @@ -143,6 +161,10 @@ done: /* Release lock. */ __libc_lock_unlock (lock); +#ifdef HANDLE_DIGITS_DOTS + __resolv_context_put (res_ctx); +#endif + #ifdef NEED_H_ERRNO if (h_errno_tmp != 0) __set_h_errno (h_errno_tmp); diff --git a/nss/getXXbyYY_r.c b/nss/getXXbyYY_r.c index 7cab825cf0..6c547ea1ca 100644 --- a/nss/getXXbyYY_r.c +++ b/nss/getXXbyYY_r.c @@ -26,7 +26,7 @@ # include <nscd/nscd_proto.h> #endif #ifdef NEED__RES -# include <resolv.h> +# include <resolv/resolv_context.h> #endif /*******************************************************************\ |* Here we assume several symbols to be defined: *| @@ -53,8 +53,7 @@ |* NEED_H_ERRNO - an extra parameter will be passed to point to *| |* the global `h_errno' variable. *| |* *| -|* NEED__RES - the global _res variable might be used so we *| -|* will have to initialize it if necessary *| +|* NEED__RES - obtain a struct resolv_context resolver context *| |* *| |* PREPROCESS - code run before anything else *| |* *| @@ -213,6 +212,18 @@ INTERNAL (REENTRANT_NAME) (ADD_PARAMS, LOOKUP_TYPE *resbuf, char *buffer, bool any_service = false; #endif +#ifdef NEED__RES + /* The HANDLE_DIGITS_DOTS case below already needs the resolver + configuration, so this has to happen early. */ + struct resolv_context *res_ctx = __resolv_context_get (); + if (res_ctx == NULL) + { + *h_errnop = NETDB_INTERNAL; + *result = NULL; + return errno; + } +#endif /* NEED__RES */ + #ifdef PREPROCESS PREPROCESS; #endif @@ -260,17 +271,6 @@ INTERNAL (REENTRANT_NAME) (ADD_PARAMS, LOOKUP_TYPE *resbuf, char *buffer, } else { -#ifdef NEED__RES - /* The resolver code will really be used so we have to - initialize it. */ - if (__res_maybe_init (&_res, 0) == -1) - { - *h_errnop = NETDB_INTERNAL; - *result = NULL; - return errno; - } -#endif /* need _res */ - void *tmp_ptr = fct.l; #ifdef PTR_MANGLE PTR_MANGLE (tmp_ptr); @@ -399,6 +399,12 @@ done: POSTPROCESS; #endif +#ifdef NEED__RES + /* This has to happen late because the POSTPROCESS stage above might + need the resolver context. */ + __resolv_context_put (res_ctx); +#endif /* NEED__RES */ + int res; if (status == NSS_STATUS_SUCCESS || status == NSS_STATUS_NOTFOUND) res = 0; diff --git a/nss/getnssent_r.c b/nss/getnssent_r.c index 5fdbf3be00..d85065b6cc 100644 --- a/nss/getnssent_r.c +++ b/nss/getnssent_r.c @@ -18,6 +18,7 @@ #include <errno.h> #include <netdb.h> #include "nsswitch.h" +#include <resolv/resolv_context.h> /* Set up NIP to run through the services. If ALL is zero, use NIP's current location if it's not nil. Return nonzero if there are no @@ -59,10 +60,15 @@ __nss_setent (const char *func_name, db_lookup_function lookup_fct, } fct; int no_more; - if (res && __res_maybe_init (&_res, 0) == -1) + struct resolv_context *res_ctx = NULL; + if (res) { - __set_h_errno (NETDB_INTERNAL); - return; + res_ctx = __resolv_context_get (); + if (res_ctx == NULL) + { + __set_h_errno (NETDB_INTERNAL); + return; + } } /* Cycle through the services and run their `setXXent' functions until @@ -95,6 +101,8 @@ __nss_setent (const char *func_name, db_lookup_function lookup_fct, *last_nip = *nip; } + __resolv_context_put (res_ctx); + if (stayopen_tmp) *stayopen_tmp = stayopen; } @@ -112,10 +120,15 @@ __nss_endent (const char *func_name, db_lookup_function lookup_fct, } fct; int no_more; - if (res && __res_maybe_init (&_res, 0) == -1) + struct resolv_context *res_ctx = NULL; + if (res) { - __set_h_errno (NETDB_INTERNAL); - return; + res_ctx = __resolv_context_get (); + if (res_ctx == NULL) + { + __set_h_errno (NETDB_INTERNAL); + return; + } } /* Cycle through all the services and run their endXXent functions. */ @@ -132,6 +145,8 @@ __nss_endent (const char *func_name, db_lookup_function lookup_fct, no_more = __nss_next2 (nip, func_name, NULL, &fct.ptr, 0, 1); } *last_nip = *nip = NULL; + + __resolv_context_put (res_ctx); } @@ -152,11 +167,16 @@ __nss_getent_r (const char *getent_func_name, int no_more; enum nss_status status; - if (res && __res_maybe_init (&_res, 0) == -1) + struct resolv_context *res_ctx = NULL; + if (res) { - *h_errnop = NETDB_INTERNAL; - *result = NULL; - return errno; + res_ctx = __resolv_context_get (); + if (res_ctx == NULL) + { + *h_errnop = NETDB_INTERNAL; + *result = NULL; + return errno; + } } /* Initialize status to return if no more functions are found. */ @@ -227,6 +247,8 @@ __nss_getent_r (const char *getent_func_name, while (! no_more && status != NSS_STATUS_SUCCESS); } + __resolv_context_put (res_ctx); + *result = status == NSS_STATUS_SUCCESS ? resbuf : NULL; return (status == NSS_STATUS_SUCCESS ? 0 : status != NSS_STATUS_TRYAGAIN ? ENOENT diff --git a/nss/nsswitch.h b/nss/nsswitch.h index f3e756b684..bd3fbcb082 100644 --- a/nss/nsswitch.h +++ b/nss/nsswitch.h @@ -197,7 +197,17 @@ extern int __nss_getent_r (const char *getent_func_name, extern void *__nss_getent (getent_r_function func, void **resbuf, char **buffer, size_t buflen, size_t *buffer_size, int *h_errnop); +struct resolv_context; struct hostent; +extern int __nss_hostname_digits_dots_context (struct resolv_context *, + const char *name, + struct hostent *resbuf, + char **buffer, + size_t *buffer_size, + size_t buflen, + struct hostent **result, + enum nss_status *status, int af, + int *h_errnop) attribute_hidden; extern int __nss_hostname_digits_dots (const char *name, struct hostent *resbuf, char **buffer, size_t *buffer_size, size_t buflen, |