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Diffstat (limited to 'newlib/libc/stdio64/tmpfile64.c')
-rw-r--r-- | newlib/libc/stdio64/tmpfile64.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/newlib/libc/stdio64/tmpfile64.c b/newlib/libc/stdio64/tmpfile64.c new file mode 100644 index 000000000..c26a6204b --- /dev/null +++ b/newlib/libc/stdio64/tmpfile64.c @@ -0,0 +1,84 @@ +#ifdef __LARGE64_FILES + +/* +FUNCTION +<<tmpfile64>>---create a large temporary file + +INDEX + tmpfile64 +INDEX + _tmpfile64_r + +ANSI_SYNOPSIS + #include <stdio.h> + FILE *tmpfile64(void); + + FILE *_tmpfile64_r(void *<[reent]>); + +TRAD_SYNOPSIS + #include <stdio.h> + FILE *tmpfile64(); + + FILE *_tmpfile64_r(<[reent]>) + char *<[reent]>; + +DESCRIPTION +Create a large temporary file (a file which will be deleted automatically), +using a name generated by <<tmpnam>>. The temporary file is opened with +the mode <<"wb+">>, permitting you to read and write anywhere in it +as a binary file (without any data transformations the host system may +perform for text files). The file may be larger than 2GB. + +The alternate function <<_tmpfile64_r>> is a reentrant version. The +argument <[reent]> is a pointer to a reentrancy structure. + +Both <<tmpfile64>> and <<_tmpfile64_r>> are only defined if __LARGE64_FILES +is defined. + +RETURNS +<<tmpfile64>> normally returns a pointer to the temporary file. If no +temporary file could be created, the result is NULL, and <<errno>> +records the reason for failure. + +PORTABILITY +<<tmpfile64>> is a glibc extension. + +Supporting OS subroutines required: <<close>>, <<fstat>>, <<getpid>>, +<<isatty>>, <<lseek64>>, <<open64>>, <<read>>, <<sbrk>>, <<write>>. + +<<tmpfile64>> also requires the global pointer <<environ>>. +*/ + +#include <stdio.h> +#include <errno.h> + +FILE * +_DEFUN (_tmpfile64_r, (ptr), + struct _reent *ptr) +{ + FILE *fp; + int e; + char *f; + char buf[L_tmpnam]; + + if ((f = _tmpnam_r (ptr, buf)) == NULL) + return NULL; + fp = fopen64 (f, "wb+"); + e = ptr->_errno; + _CAST_VOID remove (f); + ptr->_errno = e; + return fp; +} + +#ifndef _REENT_ONLY + +FILE * +_DEFUN_VOID (tmpfile64) +{ + return _tmpfile64_r (_REENT); +} + +#endif + +#endif /* __LARGE64_FILES */ + |