RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-19 11:02:59 +02:00
Code Issues Projects Releases Wiki Activity

Try to use /proc on FreeBSD for getExecutablePath

Browse Source 
Currently, clang's libTooling passes this function a fake argv0, which
means that no libTooling tools can find the standard headers on FreeBSD.
With this change, these will now work on any FreeBSD systems that have
procfs mounted.  This isn't the right fix for the libTooling issue, but
it does bring the FreeBSD implementation of getExecutablePath closer to
the Linux and macOS implementations.

llvm-svn: 359427
This commit is contained in:
David Chisnall 2019-04-29 09:24:51 +00:00
parent 8a09a238aa
commit c9baf9dd98
1 changed files with 14 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
lib/Support/Unix/Path.inc
View File

@ -185,8 +185,21 @@ std::string getMainExecutable(const char *argv0, void *MainAddr) {
#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || \
defined(__minix) || defined(__DragonFly__) || \
defined(__FreeBSD_kernel__) || defined(_AIX)
StringRef curproc("/proc/curproc/file");
char exe_path[PATH_MAX];
// /proc is not mounted by default under FreeBSD, but gives more accurate
// information than argv[0] when it is.
if (sys::fs::exists(curproc)) {
ssize_t len = readlink(curproc.str().c_str(), exe_path, sizeof(exe_path));
if (len > 0) {
// Null terminate the string for realpath. readlink never null
// terminates its output.
len = std::min(len, ssize_t(sizeof(exe_path) - 1));
exe_path[len] = '\0';
return exe_path;
}
}
// If we don't have procfs mounted, fall back to argv[0]
if (getprogpath(exe_path, argv0) != NULL)
return exe_path;
#elif defined(__linux__) || defined(__CYGWIN__)