diff options
Diffstat (limited to 'bin/sh/redir.c')
| -rw-r--r-- | bin/sh/redir.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/bin/sh/redir.c b/bin/sh/redir.c index 4f0a40c..6e6f7a5 100644 --- a/bin/sh/redir.c +++ b/bin/sh/redir.c @@ -155,6 +155,7 @@ openredirect(union node *redir, char memory[10]) int fd = redir->nfile.fd; char *fname; int f; + int e; /* * We suppress interrupts so that we won't leave open file @@ -173,7 +174,11 @@ openredirect(union node *redir, char memory[10]) error("cannot open %s: %s", fname, strerror(errno)); movefd: if (f != fd) { - dup2(f, fd); + if (dup2(f, fd) == -1) { + e = errno; + close(f); + error("%d: %s", fd, strerror(e)); + } close(f); } break; |
