diff options
| author | Deepak Goel <[email protected]> | 2017-02-15 15:13:38 -0800 |
|---|---|---|
| committer | Deepak Goel <[email protected]> | 2017-03-22 15:42:22 -0700 |
| commit | 3fcf58b142e22adb754b312576570c904655f877 (patch) | |
| tree | 5e0630d7ca5b6544f2d1db3c66b2a26a70f2f85e /lib/erl_interface/src | |
| parent | aa315e1cf1b79ab782e5b4c944595495ebf4e2f4 (diff) | |
| download | otp-3fcf58b142e22adb754b312576570c904655f877.tar.gz otp-3fcf58b142e22adb754b312576570c904655f877.tar.bz2 otp-3fcf58b142e22adb754b312576570c904655f877.zip | |
This patch fixes the issue in which erlang fails to start
if the hostname is 64 characters on a linux system.
Diffstat (limited to 'lib/erl_interface/src')
| -rw-r--r-- | lib/erl_interface/src/connect/ei_connect.c | 9 | ||||
| -rw-r--r-- | lib/erl_interface/src/prog/erl_call.c | 3 |
2 files changed, 8 insertions, 4 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); } |