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Some systems provide the O_NOFOLLOW flag to help mitigate this problem.  The flag will be required by the forthcoming POSIX.1-2008 standard, and so will become more portable over time \[[Austin Group 08|AA. References#AustinBibliography#Austin Group 08]\]. If the flag is set and the supplied {{file_name}} is a symbolic link, then the open will fail.

\[[Austin Group 08|AA. References#AustinBibliography#Austin Group 08]\]
\[[MITRE|AA. References#MITREBibliography#MITRE]\] [CWE ID 59|http://cwe.mitre.org/data/definitions/59.html], "Failure to Resolve Links Before File Access (aka 'Link Following')"
\[MITRE\] [CWE ID 362|http://cwe.mitre.org/data/definitions/362.html], "Race Condition"
\[MITRE\] [CWE ID 367|http://cwe.mitre.org/data/definitions/367.html], "CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition"
\[[Open Group 04|AA. References#OpenBibliography#Open Group 04]\] [{{open()}}|http://www.opengroup.org/onlinepubs/009695399/functions/open.html]
\[[Seacord 05|AA. References#SeacordBibliography#Seacord 05]\] Chapter 7, "File I/O"