[hackers] [sbase] nohup: Open nohup.out WRONLY || Arthur Williams

[git]

commit 2c2a7f54ab55a022a617e510b6e00c3e2736fabd
Author:     Arthur Williams <taapart...@gmail.com>
AuthorDate: Fri Sep 3 19:08:21 2021 -0500
Commit:     Michael Forney <mfor...@mforney.org>
CommitDate: Sat Oct 23 16:17:20 2021 -0700

    nohup: Open nohup.out WRONLY
    
    Open nohup.out write-only instead of not specifying the access permissions
    instead of getting undefined behavior (which probably results in stdout
    not being writable).

diff --git a/nohup.c b/nohup.c
index 2825c5d..5c1bf44 100644
--- a/nohup.c
+++ b/nohup.c
@@ -31,7 +31,7 @@ main(int argc, char *argv[])
                enprintf(127, "signal HUP:");
 
        if (isatty(STDOUT_FILENO)) {
-               if ((fd = open("nohup.out", O_APPEND | O_CREAT, S_IRUSR | 
S_IWUSR)) < 0)
+               if ((fd = open("nohup.out", O_WRONLY | O_APPEND | O_CREAT, 
S_IRUSR | S_IWUSR)) < 0)
                        enprintf(127, "open nohup.out:");
                if (dup2(fd, STDOUT_FILENO) < 0)
                        enprintf(127, "dup2:");