diff options
| -rw-r--r-- | Makefile | 1 | ||||
| -rw-r--r-- | libgcompat/netdb.c | 79 |
2 files changed, 80 insertions, 0 deletions
@@ -9,6 +9,7 @@ LIBGCOMPAT_SRC = \ libgcompat/malloc.c \ libgcompat/math.c \ libgcompat/misc.c \ + libgcompat/netdb.c \ libgcompat/pthread.c \ libgcompat/pwd.c \ libgcompat/resolv.c \ diff --git a/libgcompat/netdb.c b/libgcompat/netdb.c new file mode 100644 index 0000000..ae7713a --- /dev/null +++ b/libgcompat/netdb.c @@ -0,0 +1,79 @@ +#include <errno.h> /* ENOENT */ +#include <netdb.h> /* getproto* */ +#include <stddef.h> /* NULL, size_t */ +#include <string.h> /* memcpy */ + +/** + * Retrieve information from the network protocol database by protocol name, + * reentrantly. + * + * LSB 5.0: LSB-Core-generic/baselib-getprotobyname-r.html + */ +int getprotobyname_r(const char *name, struct protoent *result_buf, char *buf, + size_t buflen, struct protoent **result) +{ + struct protoent *prototmp = getprotobyname(name); + + /* musl does not reuse static storage, so no race is possible. */ + if (prototmp == NULL) { + *result = NULL; + return ENOENT; + } + *result = memcpy(result_buf, prototmp, sizeof(*result_buf)); + + return 0; +} + +/** + * Retrieve information from the network protocol database by protocol number, + * reentrantly. + * + * LSB 5.0: LSB-Core-generic/baselib-getprotobynumber-r.html + */ +int getprotobynumber_r(int proto, struct protoent *result_buf, char *buf, + size_t buflen, struct protoent **result) +{ + struct protoent *prototmp = getprotobynumber(proto); + + /* musl does not reuse static storage, so no race is possible. */ + if (prototmp == NULL) { + *result = NULL; + return ENOENT; + } + *result = memcpy(result_buf, prototmp, sizeof(*result_buf)); + + return 0; +} + +/** + * Read the next entry of the protocol database, reentrantly. + * + * LSB 5.0: LSB-Core-generic/baselib-getprotoent-r.html + */ +int getprotoent_r(struct protoent *result_buf, char *buf, size_t buflen, + struct protoent **result) +{ + struct protoent *prototmp = getprotoent(); + + /* musl does not reuse static storage, so no race is possible. */ + if (prototmp == NULL) { + *result = NULL; + return ENOENT; + } + *result = memcpy(result_buf, prototmp, sizeof(*result_buf)); + + return 0; +} + +/** + * Read the next entry of the network services database, reentrantly. + * + * LSB 5.0: LSB-Core-generic/baselib-getservent-r.html + */ +int getservent_r(struct servent *result_buf, char *buf, size_t buflen, + struct servent **result) +{ + /* musl does not implement getservent(). */ + *result = NULL; + return ENOENT; +} |