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| author | Devon H. O'Dell <devon.odell@gmail.com> | 2011-03-06 14:57:05 -0500 |
|---|---|---|
| committer | Devon H. O'Dell <devon.odell@gmail.com> | 2011-03-06 14:57:05 -0500 |
| commit | a0644fa55813ec6a0d5cd6178ee5ea4c70755040 (patch) | |
| tree | bf858d50519ff25c1c01b93109480341184961b5 | |
| parent | 864d09bbb43f7088eba152a527f548f4951a5e7f (diff) | |
| download | go-a0644fa55813ec6a0d5cd6178ee5ea4c70755040.tar.gz | |
syscall: work around FreeBSD execve kernel bug
FreeBSD's execve implementation has an integer underflow in a bounds test which
causes it to erroneously think the argument list is too long when argv[0] is
longer than interpreter + path.
R=rsc, bradfitz, rsc1
CC=golang-dev
http://codereview.appspot.com/4259056
Committer: Russ Cox <rsc@golang.org>
| -rw-r--r-- | src/pkg/syscall/exec_unix.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/pkg/syscall/exec_unix.go b/src/pkg/syscall/exec_unix.go index 04c066918..2e09539ee 100644 --- a/src/pkg/syscall/exec_unix.go +++ b/src/pkg/syscall/exec_unix.go @@ -238,6 +238,10 @@ func forkExec(argv0 string, argv []string, envv []string, traceme bool, dir stri dirp = StringBytePtr(dir) } + if OS == "freebsd" && len(argv[0]) > len(argv0) { + argvp[0] = argv0p + } + // Acquire the fork lock so that no other threads // create new fds that are not yet close-on-exec // before we fork. |