| tmpnam.3 (167652) | tmpnam.3 (208027) |
|---|---|
| 1.\" Copyright (c) 1988, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the American National Standards Committee X3, on Information 6.\" Processing Systems. 7.\" 8.\" Redistribution and use in source and binary forms, with or without --- 16 unchanged lines hidden (view full) --- 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)tmpnam.3 8.2 (Berkeley) 11/17/93 | 1.\" Copyright (c) 1988, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the American National Standards Committee X3, on Information 6.\" Processing Systems. 7.\" 8.\" Redistribution and use in source and binary forms, with or without --- 16 unchanged lines hidden (view full) --- 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)tmpnam.3 8.2 (Berkeley) 11/17/93 |
| 33.\" $FreeBSD: head/lib/libc/stdio/tmpnam.3 167652 2007-03-16 21:46:24Z maxim $ | 33.\" $FreeBSD: head/lib/libc/stdio/tmpnam.3 208027 2010-05-13 12:07:55Z uqs $ |
| 34.\" 35.Dd March 18, 2007 36.Dt TMPFILE 3 37.Os 38.Sh NAME 39.Nm tempnam , 40.Nm tmpfile , 41.Nm tmpnam --- 170 unchanged lines hidden (view full) --- 212.Fn tempnam 213function 214may fail and set 215.Va errno 216for any of the errors specified for the library functions 217.Xr malloc 3 218or 219.Xr mktemp 3 . | 34.\" 35.Dd March 18, 2007 36.Dt TMPFILE 3 37.Os 38.Sh NAME 39.Nm tempnam , 40.Nm tmpfile , 41.Nm tmpnam --- 170 unchanged lines hidden (view full) --- 212.Fn tempnam 213function 214may fail and set 215.Va errno 216for any of the errors specified for the library functions 217.Xr malloc 3 218or 219.Xr mktemp 3 . |
| 220.Sh SEE ALSO 221.Xr mkstemp 3 , 222.Xr mktemp 3 223.Sh STANDARDS 224The 225.Fn tmpfile 226and 227.Fn tmpnam 228functions 229conform to 230.St -isoC . |
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| 220.Sh SECURITY CONSIDERATIONS 221The 222.Fn tmpnam 223and 224.Fn tempnam 225functions are susceptible to a race condition 226occurring between the selection of the file name 227and the creation of the file, 228which allows malicious users 229to potentially overwrite arbitrary files in the system, 230depending on the level of privilege of the running program. 231Additionally, there is no means by which 232file permissions may be specified. 233It is strongly suggested that 234.Xr mkstemp 3 235be used in place of these functions. 236(See 237the FSA.) | 231.Sh SECURITY CONSIDERATIONS 232The 233.Fn tmpnam 234and 235.Fn tempnam 236functions are susceptible to a race condition 237occurring between the selection of the file name 238and the creation of the file, 239which allows malicious users 240to potentially overwrite arbitrary files in the system, 241depending on the level of privilege of the running program. 242Additionally, there is no means by which 243file permissions may be specified. 244It is strongly suggested that 245.Xr mkstemp 3 246be used in place of these functions. 247(See 248the FSA.) |
| 238.Sh SEE ALSO 239.Xr mkstemp 3 , 240.Xr mktemp 3 241.Sh STANDARDS 242The 243.Fn tmpfile 244and 245.Fn tmpnam 246functions 247conform to 248.St -isoC . | |