diff options
| -rw-r--r-- | llvm/lib/Support/Unix/Path.inc | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/llvm/lib/Support/Unix/Path.inc b/llvm/lib/Support/Unix/Path.inc index 5eba86d2077..d1f82bc9e72 100644 --- a/llvm/lib/Support/Unix/Path.inc +++ b/llvm/lib/Support/Unix/Path.inc @@ -90,6 +90,11 @@ #define STATVFS_F_FLAG(vfs) (vfs).f_flags #endif +#if defined(__NetBSD__) +#include <sys/param.h> +#include <sys/sysctl.h> +#endif + using namespace llvm; namespace llvm { @@ -98,7 +103,7 @@ namespace fs { const file_t kInvalidFile = -1; -#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || \ +#if defined(__FreeBSD__) || defined(__OpenBSD__) || \ defined(__minix) || defined(__FreeBSD_kernel__) || defined(__linux__) || \ defined(__CYGWIN__) || defined(__DragonFly__) || defined(_AIX) || defined(__GNU__) static int @@ -169,7 +174,18 @@ std::string getMainExecutable(const char *argv0, void *MainAddr) { if (realpath(exe_path, link_path)) return link_path; } -#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || \ +#elif defined(__NetBSD__) + // NB: sysctl() solution can't be used on FreeBSD since it may return + // a wrong path when a file is hardlinked in multiple locations. + // See r303285 for an earlier revert. + + char exe_path[PATH_MAX]; + int mib[4] = {CTL_KERN, KERN_PROC_ARGS, -1, KERN_PROC_PATHNAME}; + size_t len = sizeof(exe_path); + + if (sysctl(mib, 4, exe_path, &len, nullptr, 0) == 0) + return exe_path; +#elif defined(__FreeBSD__) || defined(__OpenBSD__) || \ defined(__minix) || defined(__DragonFly__) || \ defined(__FreeBSD_kernel__) || defined(_AIX) char exe_path[PATH_MAX]; |
