util: make util_get_process_exec_path work on FreeBSD w/o procfs
sysctl is the correct way of getting the current executable's path. procfs is not mounted by default. Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com> Reviewed-by: Eric Engestrom <eric@engestrom.ch> Cc: mesa-stable Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/1598>
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@ -44,6 +44,11 @@
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#include <mach-o/dyld.h>
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#endif
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#if DETECT_OS_FREEBSD
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#endif
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#if defined(__linux__) && defined(HAVE_PROGRAM_INVOCATION_NAME)
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static char *path = NULL;
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@ -202,6 +207,13 @@ util_get_process_exec_path(char* process_path, size_t len)
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int result = _NSGetExecutablePath(process_path, &bufSize);
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return (result == 0) ? strlen(process_path) : 0;
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#elif DETECT_OS_FREEBSD
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int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
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(void) sysctl(mib, 4, process_path, &len, NULL, 0);
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process_path[len - 1] = '\0';
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return len;
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#elif DETECT_OS_UNIX
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ssize_t r;
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