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Add tmpnam() and tempnam()

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This commit is contained in:
Gregory Nutt 2014-11-05 10:43:17 -06:00
parent d13731711f
commit 787cd466d2
5 changed files with 77 additions and 25 deletions
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45
Documentation/NuttxUserGuide.html
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@ -13,7 +13,7 @@
<h1><big><font color="#3c34ec"><i>NuttX Operating System<p>User's Manual</i></font></big></h1>
<p><small>by</small></p>
<p>Gregory Nutt<p>
<p>Last Updated: October 4, 2014</p>
<p>Last Updated: November 5, 2014</p>
</td>
</tr>
</table>
@ -7629,11 +7629,12 @@ interface of the same name.
<li><a href="#directoryoperations">2.10.3 Directory Operations</a></li>
<li><a href="#dirunistdops">2.10.4 UNIX Standard Operations</a></li>
<li><a href="#standardio">2.10.5 Standard I/O</a></li>
<li><a href="#aio">2.10.6 Asynchronous I/O</a></li>
<li><a href="#stdstrings">2.10.7 Standard String Operations</a></li>
<li><a href="#PipesNFifos">2.10.8 Pipes and FIFOs</a></li>
<li><a href="#fatsupport">2.10.9 FAT File System Support</a></li>
<li><a href="#mmapxip">2.10.10 <code>mmap()</code> and eXecute In Place (XIP)</a></li>
<li><a href="#standardlib">2.10.6 Standard Library</a></li>
<li><a href="#aio">2.10.7 Asynchronous I/O</a></li>
<li><a href="#stdstrings">2.10.8 Standard String Operations</a></li>
<li><a href="#PipesNFifos">2.10.9 Pipes and FIFOs</a></li>
<li><a href="#fatsupport">2.10.10 FAT File System Support</a></li>
<li><a href="#mmapxip">2.10.11 <code>mmap()</code> and eXecute In Place (XIP)</a></li>
</ul>
<h3><a name="FileSystemOverview">2.10.1 NuttX File System Overview</a></h3>
@ -7953,6 +7954,8 @@ int dprintf(int fd, FAR const char *fmt, ...);
int vdprintf(int fd, FAR const char *fmt, va_list ap);
int statfs(FAR const char *path, FAR struct statfs *buf);
FAR char *tmpnam(FAR char *s);
FAR char *tempnam(FAR const char *dir, FAR const char *pfx);
#include &lt;sys/stat.h&gt;
@ -7967,7 +7970,19 @@ int statfs(const char *path, struct statfs *buf);
int fstatfs(int fd, struct statfs *buf);
</pre></ul>
<h3><a name="aio">2.10.6 Asynchronous I/O</a></h3>
<h3><a name="standardlib">2.10.6 Standard Library</a></h3>
<p>
<code>stdlib.h</code> generally addresses other operating system interfaces.
However, the following may also be considered as file system interfaces:
</p>
<ul><pre>
#include &lt;stdlib.h&gt;
int mktemp(FAR char *template);
int mkstemp(FAR char *template);
</pre></ul>
<h3><a name="aio">2.10.7 Asynchronous I/O</a></h3>
<ul><pre>
#include &lt;aio.h&gt;
@ -7983,7 +7998,7 @@ int lio_listio(int mode, FAR struct aiocb *const list[], int nent,
FAR struct sigevent *sig);
</pre></ul>
<h3><a name="stdstrings">2.10.7 Standard String Operations</a></h3>
<h3><a name="stdstrings">2.10.8 Standard String Operations</a></h3>
<ul><pre>
#include &lt;string.h&gt;
@ -8017,9 +8032,9 @@ void *memmove(void *dest, const void *src, size_t count);
# define bzero(s,n) (void)memset(s,0,n)
</pre></ul>
<h3><a name="PipesNFifos">2.10.8 Pipes and FIFOs</a></h3>
<h3><a name="PipesNFifos">2.10.9 Pipes and FIFOs</a></h3>
<h3>2.10.8.1 <a name="pipe"><code>pipe</code></a></h3>
<h3>2.10.9.1 <a name="pipe"><code>pipe</code></a></h3>
<p>
<b>Function Prototype:</b>
</p>
@ -8053,7 +8068,7 @@ int pipe(int fd[2]);
</ul>
</p>
<h3>2.10.8.2 <a name="mkfifo"><code>mkfifo</code></a></h3>
<h3>2.10.9.2 <a name="mkfifo"><code>mkfifo</code></a></h3>
<p>
<b>Function Prototype:</b>
</p>
@ -8100,8 +8115,8 @@ int mkfifo(FAR const char *pathname, mode_t mode);
</ul>
</p>
<h3><a name="fatsupport">2.10.9 FAT File System Support</a></h3>
<h3>2.10.9.1 <a name="mkfatfs"><code>mkfatfs</code></a></h3>
<h3><a name="fatsupport">2.10.10 FAT File System Support</a></h3>
<h3>2.10.10.1 <a name="mkfatfs"><code>mkfatfs</code></a></h3>
<p>
<b>Function Prototype:</b>
</p>
@ -8178,7 +8193,7 @@ struct fat_format_s
</ul>
</p>
<h3><a name="mmapxip">2.10.10 <code>mmap()</code> and eXecute In Place (XIP)</a></h3>
<h3><a name="mmapxip">2.10.11 <code>mmap()</code> and eXecute In Place (XIP)</a></h3>
<p>
NuttX operates in a flat open address space and is focused on MCUs that do
support Memory Management Units (MMUs). Therefore, NuttX generally does not
@ -8307,7 +8322,7 @@ struct fat_format_s
</li>
</ol>
<h3><a name="mmap">2.10.10.1 <code>mmap</code></a></h3>
<h3><a name="mmap">2.10.11.1 <code>mmap</code></a></h3>
<p>
<b>Function Prototype:</b>
</p>

10
fs/Kconfig
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@ -61,16 +61,6 @@ source fs/smartfs/Kconfig
source fs/binfs/Kconfig
source fs/procfs/Kconfig
config LIBC_TMPDIR
string "Temporary file directory"
default "/tmp"
depends on FS_WRITABLE
---help---
If a write-able file system is selected, this string will be
provided to specify the full path to a directory where temporary
files can be created. This would be a good application of RAM disk:
To provide temporary storage for application data.
comment "System Logging"
config SYSLOG

22
include/stdio.h
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@ -78,6 +78,26 @@
#define getchar() fgetc(stdin)
#define rewind(s) ((void)fseek((s),0,SEEK_SET))
/* Path to the directory where temporary files can be created */
#ifndef CONFIG_LIBC_TMPDIR
# define CONFIG_LIBC_TMPDIR "/tmp"
#endif
#define P_tmpdir CONFIG_LIBC_TMPDIR
/* Maximum size of character array to hold tmpnam() output. */
#ifndef CONFIG_LIBC_MAX_TMPFILE
# define CONFIG_LIBC_MAX_TMPFILE 32
#endif
#define L_tmpnam CONFIG_LIBC_MAX_TMPFILE
/* the maximum number of unique temporary file names that can be generated */
#define TMP_MAX 56800235584ull
/****************************************************************************
* Public Type Definitions
****************************************************************************/
@ -161,6 +181,8 @@ int vdprintf(int fd, FAR const char *fmt, va_list ap);
/* Operations on paths */
int statfs(FAR const char *path, FAR struct statfs *buf);
FAR char *tmpnam(FAR char *s);
FAR char *tempnam(FAR const char *dir, FAR const char *pfx);
#undef EXTERN
#if defined(__cplusplus)

21
libc/Kconfig
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@ -192,6 +192,27 @@ config LIBC_PERROR_STDOUT
be defined, however, to provide perror() output that is serialized with
other stdout messages.
config LIBC_TMPDIR
string "Temporary file directory"
default "/tmp"
depends on FS_WRITABLE
---help---
If a write-able file system is selected, this string will be
provided to specify the full path to a directory where temporary
files can be created. This would be a good application of RAM disk:
To provide temporary storage for application data.
config LIBC_MAX_TMPFILE
int "Maximum size of a temporary file path"
default 32
depends on FS_WRITABLE
---help---
If a write-able file system is selected, then temporary file may be
supported at the path provided by LIBC_TMPDIR. The tmpnam() interface
keeps a static copy of this last filename produced; this value is the
maximum size of that last filename. This size is the size of the full
file path.
config ARCH_LOWPUTC
bool "Low-level console output"
default "y"

4
libc/stdio/Make.defs
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@ -65,6 +65,10 @@ CSRCS += lib_vprintf.c lib_fprintf.c lib_vfprintf.c lib_stdinstream.c
CSRCS += lib_stdoutstream.c lib_stdsistream.c lib_stdsostream.c lib_perror.c
CSRCS += lib_feof.c lib_ferror.c lib_clearerr.c
endif
ifeq ($(CONFIG_FS_WRITABLE),y)
CSRCS += lib_tempnam.c lib_tmpnam.c
endif
endif