Developer's Daily | Unix by Example |
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tmpfile ? create a temporary file |
#include <stdio.h> FILE *tmpfile (void); |
The tmpfile() function generates a unique temporary filename using the path prefix P_tmpdir defined in <stdio.h>. The temporary file is then opened in binary read/write (w+b) mode. The file will be automatically deleted when it is closed or the program terminates. |
The tmpfile() function returns a stream descriptor, or NULL if a unique filename cannot be generated or the unique file cannot be opened. |
EACCES |
Search permission denied for directory in file’s path prefix. |
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EEXIST |
Unable to generate a unique filename. |
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EMFILE |
Too many file descriptors in use by process. |
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ENFILE |
Too many files open in system. |
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EROFS |
Read-only filesystem. |
SVID 3, POSIX, BSD 4.3, ISO 9899 |
mktemp(3), mkstemp(3), tmpnam(3), tempnam(3) |