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| author | jh <jh@FreeBSD.org> | 2010-02-08 15:50:51 +0000 |
|---|---|---|
| committer | jh <jh@FreeBSD.org> | 2010-02-08 15:50:51 +0000 |
| commit | 000376f24e6eac64c54f0693ac3b6730c0e446b9 (patch) | |
| tree | 3cc3fcbf828c21d4d80f9b3deab3302e1d014f33 | |
| parent | 47a3486c10a17990d8bff6addf75c913dcbc745a (diff) | |
| download | FreeBSD-src-000376f24e6eac64c54f0693ac3b6730c0e446b9.zip FreeBSD-src-000376f24e6eac64c54f0693ac3b6730c0e446b9.tar.gz | |
MFC r200752:
Avoid sharing the file descriptor of the output file with traced
processes by setting the FD_CLOEXEC flag for the output file.
PR: bin/140493
| -rw-r--r-- | usr.bin/truss/main.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/usr.bin/truss/main.c b/usr.bin/truss/main.c index d0dd073..586fcd6 100644 --- a/usr.bin/truss/main.c +++ b/usr.bin/truss/main.c @@ -239,6 +239,12 @@ main(int ac, char **av) if ((trussinfo->outfile = fopen(fname, "w")) == NULL) errx(1, "cannot open %s", fname); } + /* + * Set FD_CLOEXEC, so that the output file is not shared with + * the traced process. + */ + if (fcntl(fileno(trussinfo->outfile), F_SETFD, FD_CLOEXEC) == -1) + warn("fcntl()"); /* * If truss starts the process itself, it will ignore some signals -- |
