diff options
| -rw-r--r-- | proc/host.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/proc/host.c b/proc/host.c index 0f5919c2..7486d400 100644 --- a/proc/host.c +++ b/proc/host.c @@ -28,6 +28,9 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <string.h> #include <hurd/exec.h> +#define HURD_VERSION_DEFINE +#include <hurd/version.h> + #include "proc.h" #include "proc_S.h" @@ -37,6 +40,18 @@ static int hostnamelen; static mach_port_t *std_port_array; static int *std_int_array; static int n_std_ports, n_std_ints; +static struct utsname uname_info; +static char *machversion; + +struct server_version +{ + char *name, + char *version, + char *release, +} *server_versions; +int nserver_versions, server_version_nalloc; + + struct execdata_notify { @@ -72,6 +87,7 @@ S_proc_sethostname (struct proc *p, char *newhostname, u_int newhostnamelen) { + int len; if (! check_uid (p, 0)) return EPERM; @@ -84,6 +100,12 @@ S_proc_sethostname (struct proc *p, bcopy (newhostname, hostname, newhostnamelen); hostname[newhostnamelen] = '\0'; + len = newhostnamelen + 1; + if (len > sizeof uname_info.nodename) + len = sizeof uname_info.nodename; + bcopy (hostname, uname_info.nodename, len); + uname_info.nodename[sizeof uname_info.nodename] = '\0'; + return 0; } @@ -205,3 +227,232 @@ S_proc_execdata_notify (struct proc *p, return 0; } +/* Version information handling. + + A server registers its name, and version with + startup_register_version. Each release of the Hurd is defined by + some set of versions for the programs making up the Hurd (found in + <hurd/version.h>). If the server being being registered matches its + entry in that file, then the register request is ignored. + + These are then element of `struct utsname', returned by uname. The + release is compared against `hurd_release', as compiled into init. + If it matches, it is omitted. A typical version string for the + system might be: + + "GNU Hurd Version 0.0 [Mach 3.0 VERSION(MK75)] auth 2.6" + Which indicates that the Hurd servers are all from Hurd 0.0 except + for auth, which is auth version 2.6. + + The version for the Hurd itself comes from <hurd/hurd_types.h> and + is compiled into proc. */ + +kern_return_t +S_proc_register_version (startup_t server, + mach_port_t credential, + const char *name, + const char *release, + const char *version) +{ + int i, j; + + if (credential != host_priv) + /* Must be privileged to register for uname. */ + return EPERM; + + for (i = 0; i < nserver_versions; i++) + if (!strcmp (name, server_versions[i].name)) + { + /* Change this entry */ + free (server_versions[i].version); + free (server_versions[i].release); + server_versions[i].version = malloc (strlen (version) + 1); + server_versions[i].release = malloc (strlen (version) + 1); + strcpy (server_versions[i].version, version); + strcpy (server_versions[i].release, release); + break; + } + if (i == nserver_versions) + { + /* Didn't find it; extend. */ + if (nserver_versions == versalloc) + { + server_version_nalloc *= 2; + server_versions + = realloc (server_versions, + sizeof (struct server_version) * server_version_nalloc); + } + server_versions[nserver_versions].name = malloc (strlen (name) + 1); + server_versions[nserver_versions].version = malloc (strlen (version) + + 1); + server_versions[nserver_versions].release = malloc (strlen (release) + + 1); + strcpy (server_versions[nserver_versions].name, name); + strcpy (server_versions[nserver_versions].version, version); + strcpy (server_versions[nserver_versions].release, release); + nserver_versions++; + } + + rebuild_uname (); + mach_port_deallocate (mach_task_self (), credential); + return 0; +} + +/* Rebuild the uname version string. */ +static void +rebuild_uname () +{ + int i, j; + int nmatches, greatestmatch; + char *hurdrelease; + struct hurd_version *runninghurd; + char *p = uname_info.version; + char *end = &uname_info.version[sizeof uname_info.version]; + + /* Tell if the SERVER was distributed in HURD. */ + inline int version_matches (struct server_version *server, + struct hurd_version *hurd) + { + int i; + if (strcmp (server->release, hurd->hurdrelease)) + return 0; + for (i = 0; i < hurd->nservers, i++) + if (!strcmp (server->name, hurd->vers[i].name) + && !strcmp (server->version, hurd->vers[i].version)) + return 1; + return 0; + } + + /* Add STR to uname_info.version. */ + inline void addstr (char *string) + { + if (p < end) + { + size_t len = strlen (string); + if (end - 1 - p < len) + memcpy (p, string, len); + p += len; + } + } + + /* Look through the hurd_versions array and find the spec which matches + the most releases of our versions; this will define the release. */ + greatestmatch = 0; + for (i = 0; i < nhurd_versions; i++) + { + nmatches = 0; + for (j = 0; j < nserver_versions; j++) + if (!strcmp (hurd_versions[i].hurdrelease, server_versions[j].release)) + nmatches++; + if (nmatches >= greatestmatch) + { + greatestmatch = nmatches; + hurdrelease = hurd_versions[i].hurdrelease; + } + } + + /* Now try and figure out which of the hurd versions that is this release + we should deem the version; again, base it on which has the greatest + number of matches among running servers. */ + greatestmatch = 0; + for (i = 0; i < nhurd_versions; i++) + { + if (strcmp (hurd_versions[i].hurdrelease, hurdrelease)) + continue; + nmatches = 0; + for (j = 0; j < nserver_versions; j++) + if (version_matches (&server_versions[j], &hurd_versions[i])) + nmatches++; + if (nmatches >= greatestmatch) + { + greatestmatch = nmatches; + runninghurd = &hurd_versions[i]; + } + } + + /* Now build the uname strings. The uname "release" looks like this: + GNU Hurd Release N.NN (kernel-version) + */ + sprintf (uname_info.release, "GNU Hurd Release %s (%s)", + runninghurd->hurdrelease, machversion); + + /* The uname "version" looks like this: + GNU Hurd Release N.NN, Version N.NN (kernel-version) + followed by a spec for each server that does not match the one + in runninghurd in the form "(ufs N.NN)" or the form + "(ufs N.NN [M.MM])"; N.NN is the version of the server and M.MM + is the Hurd release it expects. */ + addstr ("GNU Hurd Release "); + addstr (runninghurd->hurdrelease); + addstr (", Version "); + addstr (runninghurd->hurdversion); + addstr (" ("); + addstr (machversion); + addstr (")"); + + for (i = 0; i < nserver_versions; i++) + if (!version_matches (&server_versions[i], runninghurd)) + { + addstr ("; ("); + addstr (server_versions[i].name); + addstr (" "); + addstr (server_versions[i].version); + if (!strcmp (server_versions[i].release, runninghurd->hurdrelease)) + { + addstr (" ["); + addstr (server_versions[i].release); + addstr ("]"); + } + addstr (")"); + } + + *p = '\0'; /* Null terminate uname_info.version */ +} + + +void +initialize_version_info (void) +{ + kernel_version_t kernel_version; + char *p; + struct host_basic_info info; + size_t n = sizeof info; + + /* Fill in fixed slots sysname and machine. */ + strcpy (uname_info.sysname, "GNU"); + + host_info (mach_host_self (), HOST_BASIC_INFO, &info, &n); + sprintf (uname_info.machine, "%s %s", + mach_cpu_types[info.cpu_type], + mach_cpu_subtypes[info.cpu_type][info.cpu_subtype]); + + /* Construct machversion for use in release and version strings. */ + host_kernel_version (mach_host_self (), kernel_version); + p = index (kernel_version, ':'); + if (p) + *p = '\0'; + strcpy (machversion, kernel_version); + + /* Notice our own version and initialize server version varables. */ + server_versions = malloc (sizeof (struct server_version) * 10); + server_versions_nalloc = 10; + nserver_versions = 1; + server_versions->name = malloc (sizeof OUR_SERVER_NAME); + server_versions->release = malloc (sizeof HURD_RELEASE); + server_versions->version = malloc (sizeof OUR_VERSION); + strcpy (server_versions->name, OUR_SERVER_NAME); + strcpy (server_versions->release, HURD_RELEASE); + strcpy (server_versions->version, OUR_VERSION); + + rebuild_uname (); + + uname_info.nodename[0] = '\0'; +} + +kern_return_t +S_proc_uname (process_t process, + struct utsanme *uname) +{ + *uname = uname_info; + return 0; +} |