diff options
| -rw-r--r-- | xe.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/xe.c b/xe.c index 088db49..5983bb9 100644 --- a/xe.c +++ b/xe.c @@ -219,7 +219,7 @@ run() } int -main(int argc, char *argv[]) +main(int argc, char *argv[], char *envp[]) { char c; int i, cmdend; @@ -235,7 +235,12 @@ main(int argc, char *argv[]) exit(1); argmax = sysconf(_SC_ARG_MAX); - if (argmax <= 0) + while (*envp) // subtract size of environment + argmax -= strlen(*envp++) + 1 + sizeof(*envp); + argmax -= 4 * 1024; // subtract 4k for safety + if (argmax > 128 * 1024) // upper bound + argmax = 128 * 1024; + if (argmax <= 0) { // lower bound argmax = _POSIX_ARG_MAX; traceout = stdout; |