diff options
Diffstat (limited to 'lib')
7 files changed, 18 insertions, 14 deletions
diff --git a/lib/erl_interface/src/connect/ei_connect.c b/lib/erl_interface/src/connect/ei_connect.c index c193fd804a..27b919c093 100644 --- a/lib/erl_interface/src/connect/ei_connect.c +++ b/lib/erl_interface/src/connect/ei_connect.c @@ -497,7 +497,8 @@ int ei_connect_init(ei_cnode* ec, const char* this_node_name, } #endif /* _REENTRANT */ - if (gethostname(thishostname, EI_MAXHOSTNAMELEN) == -1) { + /* gethostname requires len to be max(hostname) + 1 */ + if (gethostname(thishostname, EI_MAXHOSTNAMELEN+1) == -1) { #ifdef __WIN32__ EI_TRACE_ERR1("ei_connect_init","Failed to get host name: %d", WSAGetLastError()); @@ -613,7 +614,8 @@ int ei_connect_tmo(ei_cnode* ec, char *nodename, unsigned ms) hp = ei_gethostbyname_r(hostname,&host,buffer,1024,&ei_h_errno); if (hp == NULL) { char thishostname[EI_MAXHOSTNAMELEN+1]; - if (gethostname(thishostname,EI_MAXHOSTNAMELEN) < 0) { + /* gethostname requies len to be max(hostname) + 1*/ + if (gethostname(thishostname,EI_MAXHOSTNAMELEN+1) < 0) { EI_TRACE_ERR0("ei_connect_tmo", "Failed to get name of this host"); erl_errno = EHOSTUNREACH; @@ -636,7 +638,8 @@ int ei_connect_tmo(ei_cnode* ec, char *nodename, unsigned ms) #else /* __WIN32__ */ if ((hp = ei_gethostbyname(hostname)) == NULL) { char thishostname[EI_MAXHOSTNAMELEN+1]; - if (gethostname(thishostname,EI_MAXHOSTNAMELEN) < 0) { + /* gethostname requires len to be max(hostname) + 1 */ + if (gethostname(thishostname,EI_MAXHOSTNAMELEN+1) < 0) { EI_TRACE_ERR1("ei_connect_tmo", "Failed to get name of this host: %d", WSAGetLastError()); diff --git a/lib/erl_interface/src/prog/erl_call.c b/lib/erl_interface/src/prog/erl_call.c index d233ed26a2..0b09d412db 100644 --- a/lib/erl_interface/src/prog/erl_call.c +++ b/lib/erl_interface/src/prog/erl_call.c @@ -325,7 +325,8 @@ int erl_call(int argc, char **argv) initWinSock(); #endif - if (gethostname(h_hostname, EI_MAXHOSTNAMELEN) < 0) { + /* gethostname requires len to be max(hostname) + 1 */ + if (gethostname(h_hostname, EI_MAXHOSTNAMELEN+1) < 0) { fprintf(stderr,"erl_call: failed to get host name: %d\n", errno); exit(1); } diff --git a/lib/ic/test/c_client_erl_server_SUITE_data/c_client.c b/lib/ic/test/c_client_erl_server_SUITE_data/c_client.c index af189a74f7..b3a18e03d4 100644 --- a/lib/ic/test/c_client_erl_server_SUITE_data/c_client.c +++ b/lib/ic/test/c_client_erl_server_SUITE_data/c_client.c @@ -58,7 +58,7 @@ #include "erl_interface.h" #include "m_i.h" -#define HOSTNAMESZ 256 +#define HOSTNAMESZ 255 #define NODENAMESZ 512 #define INBUFSZ 10 @@ -295,7 +295,7 @@ int main(int argc, char **argv) progname = argv[0]; host[HOSTNAMESZ] = '\0'; - if (gethostname(host, HOSTNAMESZ) < 0) { + if (gethostname(host, HOSTNAMESZ + 1) < 0) { fprintf(stderr, "Can't find own hostname\n"); done(1); } diff --git a/lib/ic/test/c_client_erl_server_proto_SUITE_data/c_client.c b/lib/ic/test/c_client_erl_server_proto_SUITE_data/c_client.c index b7609d63e5..40c7328f03 100644 --- a/lib/ic/test/c_client_erl_server_proto_SUITE_data/c_client.c +++ b/lib/ic/test/c_client_erl_server_proto_SUITE_data/c_client.c @@ -61,7 +61,7 @@ #include "erl_interface.h" #include "m_i.h" -#define HOSTNAMESZ 256 +#define HOSTNAMESZ 255 #define NODENAMESZ 512 #define INBUFSZ 10 @@ -298,7 +298,7 @@ int main(int argc, char **argv) progname = argv[0]; host[HOSTNAMESZ] = '\0'; - if (gethostname(host, HOSTNAMESZ) < 0) { + if (gethostname(host, HOSTNAMESZ + 1) < 0) { fprintf(stderr, "Can't find own hostname\n"); done(1); } diff --git a/lib/ic/test/c_client_erl_server_proto_tmo_SUITE_data/c_client.c b/lib/ic/test/c_client_erl_server_proto_tmo_SUITE_data/c_client.c index 23dc089555..33cfe71322 100644 --- a/lib/ic/test/c_client_erl_server_proto_tmo_SUITE_data/c_client.c +++ b/lib/ic/test/c_client_erl_server_proto_tmo_SUITE_data/c_client.c @@ -61,7 +61,7 @@ #include "erl_interface.h" #include "m_i.h" -#define HOSTNAMESZ 256 +#define HOSTNAMESZ 255 #define NODENAMESZ 512 #define INBUFSZ 10 @@ -298,7 +298,7 @@ int main(int argc, char **argv) progname = argv[0]; host[HOSTNAMESZ] = '\0'; - if (gethostname(host, HOSTNAMESZ) < 0) { + if (gethostname(host, HOSTNAMESZ + 1) < 0) { fprintf(stderr, "Can't find own hostname\n"); done(1); } diff --git a/lib/ic/test/erl_client_c_server_SUITE_data/c_server.c b/lib/ic/test/erl_client_c_server_SUITE_data/c_server.c index 53345d561b..f48480e8dc 100644 --- a/lib/ic/test/erl_client_c_server_SUITE_data/c_server.c +++ b/lib/ic/test/erl_client_c_server_SUITE_data/c_server.c @@ -81,7 +81,7 @@ static void showtime(MyTimeval *start, MyTimeval *stop); static void usage(void); static void done(int r); -#define HOSTNAMESZ 256 +#define HOSTNAMESZ 255 #define NODENAMESZ 512 #define INBUFSZ 10 #define OUTBUFSZ 0 @@ -122,7 +122,7 @@ int main(int argc, char **argv) progname = argv[0]; host[HOSTNAMESZ] = '\0'; - if (gethostname(host, HOSTNAMESZ) < 0) { + if (gethostname(host, HOSTNAMESZ + 1) < 0) { fprintf(stderr, "Can't find own hostname\n"); done(1); } diff --git a/lib/ic/test/erl_client_c_server_proto_SUITE_data/c_server.c b/lib/ic/test/erl_client_c_server_proto_SUITE_data/c_server.c index a18f0e7ba9..e2ba5bd5b6 100644 --- a/lib/ic/test/erl_client_c_server_proto_SUITE_data/c_server.c +++ b/lib/ic/test/erl_client_c_server_proto_SUITE_data/c_server.c @@ -81,7 +81,7 @@ static void showtime(MyTimeval *start, MyTimeval *stop); static void usage(void); static void done(int r); -#define HOSTNAMESZ 256 +#define HOSTNAMESZ 255 #define NODENAMESZ 512 #define INBUFSZ 10 #define OUTBUFSZ 0 @@ -122,7 +122,7 @@ int main(int argc, char **argv) progname = argv[0]; host[HOSTNAMESZ] = '\0'; - if (gethostname(host, HOSTNAMESZ) < 0) { + if (gethostname(host, HOSTNAMESZ + 1) < 0) { fprintf(stderr, "Can't find own hostname\n"); done(1); } |