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Use sysctl on FreeBSD

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This commit is contained in:
rdb 2010-04-25 13:19:55 +00:00
parent 0e54f8b85b
commit bd5e89e4a5
1 changed files with 33 additions and 9 deletions
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42
dtool/src/dtoolutil/executionEnvironment.cxx
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@ -38,6 +38,10 @@
#ifdef IS_FREEBSD
extern char **environ;
// This is for sysctl.
#include <sys/types.h>
#include <sys/sysctl.h>
#endif
#ifdef HAVE_PYTHON
@ -230,7 +234,7 @@ ns_get_environment_variable(const string &var) const {
}
}
#endif
// Otherwise, Return the binary name's parent directory.
if (!_binary_name.empty()) {
Filename main_dir (_binary_name);
@ -270,7 +274,7 @@ ns_set_environment_variable(const string &var, const string &value) {
////////////////////////////////////////////////////////////////////
// Function: ExecutionEnvironment::ns_shadow_environment_variable
// Access: Private
// Description:
// Description:
////////////////////////////////////////////////////////////////////
void ExecutionEnvironment::
ns_shadow_environment_variable(const string &var, const string &value) {
@ -281,7 +285,7 @@ ns_shadow_environment_variable(const string &var, const string &value) {
////////////////////////////////////////////////////////////////////
// Function: ExecutionEnvironment::ns_clear_shadow
// Access: Private
// Description:
// Description:
////////////////////////////////////////////////////////////////////
void ExecutionEnvironment::
ns_clear_shadow(const string &var) {
@ -421,23 +425,23 @@ read_environment_variables() {
#elif defined(IS_OSX) || defined(IS_FREEBSD)
// In the case of Mac, there's always _NSGetEnviron() which we can read.
// In the case of FreeBSD, it's the "environ" variable.
char **envp;
for (envp = environ; envp && *envp; envp++) {
string variable;
string value;
char *envc;
for (envc = *envp; envc && *envc && strncmp(envc, "=", 1) != 0; envc++) {
variable += (char) *envc;
}
if (strncmp(envc, "=", 1) == 0) {
for (envc++; envc && *envc; envc++) {
value += (char) *envc;
}
}
if (!variable.empty()) {
_variables[variable] = value;
}
@ -560,11 +564,31 @@ read_args() {
_binary_name = GLOBAL_ARGV[0];
// This really needs to be resolved against PATH.
}
for (int i = 1; i < argc; i++) {
_args.push_back(GLOBAL_ARGV[i]);
}
#elif defined(IS_FREEBSD)
// In FreeBSD, we can use sysctl to determine the command-line arguments.
size_t bufsize = 4096;
char buffer[4096];
int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_ARGS, getpid()};
if (sysctl(mib, 4, (void*) &buffer, &bufsize, NULL, 0) == -1) {
perror("sysctl");
} else {
if (_binary_name.empty()) {
_binary_name = buffer;
}
int idx = strlen(buffer) + 1;
while (idx < bufsize) {
_args.push_back((char*)(buffer + idx));
int newidx = strlen(buffer + idx);
idx += newidx + 1;
}
}
#elif defined(HAVE_PROC_SELF_CMDLINE) || defined(HAVE_PROC_CURPROC_CMDLINE)
// In Linux, and possibly in other systems as well, we might not be
// able to use the global ARGC/ARGV variables at static init time.
@ -585,7 +609,7 @@ read_args() {
return;
}
#endif
int ch = proc.get();
int index = 0;
while (!proc.eof() && !proc.fail()) {