Add man pages for memdup, aligned_memdup, strdup and strndup functions, and fix strndupa

Signed-off-by: Mattias Andrée <maandree@kth.se>

29 files changed, 562 insertions, 3 deletions

diff --git a/libsimple/strndup.h b/libsimple/strndup.h
index 90fbfa1..961b131 100644
--- a/libsimple/strndup.h
+++ b/libsimple/strndup.h
@@ -4,10 +4,8 @@
 # define libsimple_strndupa(s, n)\
 	({\
 		const char *__s = (s);\
-		size_t __n = (n);\
-		size_t __m = strlen(__s);\
+		size_t __n = strnlen(__s, n);\
 		char *__r;\
-		__n = __n < __m ? __n : __m;\
 		__r = alloca(__n + 1);\
 		memcpy(__r, __s, __n);\
 		__r[__n] = '\0';\
diff --git a/man/aligned_memdup.3libsimple b/man/aligned_memdup.3libsimple
new file mode 120000
index 0000000..a9c2fef
--- /dev/null
+++ b/man/aligned_memdup.3libsimple
@@ -0,0 +1 @@
+libsimple_aligned_memdup.3
\ No newline at end of file
diff --git a/man/aligned_memdupa.3libsimple b/man/aligned_memdupa.3libsimple
new file mode 120000
index 0000000..1a50c24
--- /dev/null
+++ b/man/aligned_memdupa.3libsimple
@@ -0,0 +1 @@
+libsimple_aligned_memdupa.3
\ No newline at end of file
diff --git a/man/ealigned_memdup.3libsimple b/man/ealigned_memdup.3libsimple
new file mode 120000
index 0000000..f860b87
--- /dev/null
+++ b/man/ealigned_memdup.3libsimple
@@ -0,0 +1 @@
+libsimple_ealigned_memdup.3
\ No newline at end of file
diff --git a/man/ememdup.3libsimple b/man/ememdup.3libsimple
new file mode 120000
index 0000000..ea4b242
--- /dev/null
+++ b/man/ememdup.3libsimple
@@ -0,0 +1 @@
+libsimple_ememdup.3
\ No newline at end of file
diff --git a/man/enaligned_memdup.3libsimple b/man/enaligned_memdup.3libsimple
new file mode 120000
index 0000000..b6e0dd2
--- /dev/null
+++ b/man/enaligned_memdup.3libsimple
@@ -0,0 +1 @@
+libsimple_enaligned_memdup.3
\ No newline at end of file
diff --git a/man/enmemdup.3libsimple b/man/enmemdup.3libsimple
new file mode 120000
index 0000000..b7ce69c
--- /dev/null
+++ b/man/enmemdup.3libsimple
@@ -0,0 +1 @@
+libsimple_enmemdup.3
\ No newline at end of file
diff --git a/man/enstrdup.3libsimple b/man/enstrdup.3libsimple
new file mode 120000
index 0000000..e8f7b76
--- /dev/null
+++ b/man/enstrdup.3libsimple
@@ -0,0 +1 @@
+libsimple_enstrdup.3
\ No newline at end of file
diff --git a/man/enstrndup.3libsimple b/man/enstrndup.3libsimple
new file mode 120000
index 0000000..e2011e0
--- /dev/null
+++ b/man/enstrndup.3libsimple
@@ -0,0 +1 @@
+libsimple_enstrndup.3
\ No newline at end of file
diff --git a/man/estrdup.3libsimple b/man/estrdup.3libsimple
new file mode 120000
index 0000000..df20a38
--- /dev/null
+++ b/man/estrdup.3libsimple
@@ -0,0 +1 @@
+libsimple_estrdup.3
\ No newline at end of file
diff --git a/man/estrndup.3libsimple b/man/estrndup.3libsimple
new file mode 120000
index 0000000..5c08b65
--- /dev/null
+++ b/man/estrndup.3libsimple
@@ -0,0 +1 @@
+libsimple_estrndup.3
\ No newline at end of file
diff --git a/man/libsimple_aligned_memdup.3 b/man/libsimple_aligned_memdup.3
new file mode 100644
index 0000000..8e18087
--- /dev/null
+++ b/man/libsimple_aligned_memdup.3
@@ -0,0 +1,151 @@
+.TH LIBSIMPLE_ALIGNED_MEMDUP 3 2018-10-27 libsimple
+.SH NAME
+libsimple_aligned_memdup \- duplicate bytes in memory
+.SH SYNOPSIS
+.nf
+#include <libsimple.h>
+
+void *libsimple_aligned_memdupa(const void *\fIs\fP, size_t \fIalignment\fP, size_t \fIn\fP);
+void *libsimple_aligned_memdup(const void *\fIs\fP, size_t \fIalignment\fP, size_t \fIn\fP);
+void *libsimple_enaligned_memdup(int \fIstatus\fP, const void *\fIs\fP, size_t \fIalignment\fP, size_t \fIn\fP);
+static inline void *libsimple_ealigned_memdup(const void *\fIs\fP, size_t \fIalignment\fP, size_t \fIn\fP);
+
+#ifndef aligned_memdupa
+# define aligned_memdupa libsimple_aligned_memdupa
+#endif
+#ifndef aligned_memdup
+# define aligned_memdup libsimple_aligned_memdup
+#endif
+#ifndef enaligned_memdup
+# define enaligned_memdup libsimple_enaligned_memdup
+#endif
+#ifndef ealigned_memdup
+# define ealigned_memdup libsimple_ealigned_memdup
+#endif
+.fi
+.PP
+Link with
+.IR \-lsimple .
+.SH DESCRIPTION
+The
+.BR libsimple_aligned_memdup ()
+function constructs allocates memory with the alignment
+specified in the
+.I alignment
+parameter and copies
+.I n
+first bytes from
+.I s
+into the new allocation.
+.PP
+The
+.BR libsimple_enaligned_memdup ()
+and
+.BR libsimple_ealigned_memdup ()
+functions are versions of the
+.BR libsimple_aligned_memdup ()
+function that call the
+.BR libsimple_enprintf (3)
+function on failure, causing the process to print
+an error message and exit. See
+.BR libsimple_enprintf (3)
+for more information.
+.PP
+The
+.BR libsimple_memdupa ()
+function is implemented as a macro and is a version
+of the
+.BR libsimple_memdup ()
+function that uses allocates the memory on the stack
+rather than on the heap, causing the return pointer
+to become invalid when the calling function returns.
+.SH RETURN VALUE
+Upon successful completion, the
+.BR libsimple_aligned_memdupa (),
+.BR libsimple_aligned_memdup (),
+.BR libsimple_enaligned_memdup (),
+and
+.BR libsimple_ealigned_memdup ()
+functions return a non-null pointer, on failure the
+.BR libsimple_aligned_memdup ()
+function returns
+.B NULL
+and set
+.I errno
+to indicate the error, and the
+.BR libsimple_enaligned_memdup (),
+and
+.BR libsimple_ealigned_memdup ()
+functions exit the process group. The
+.BR libsimple_aligned_memdupa ()
+function cannot fail, however the kernel
+can kill the process with a
+.B SIGSEGV
+signal if the memory cannot be allocated.
+.PP
+The returned pointer should be deallocated when it
+is no longer needed, except for the pointer returned
+by the
+.BR libsimple_aligned_memdupa ()
+function, it is automatically deallocated when the
+calling function returns.
+.SH ERRORS
+The
+.BR libsimple_aligned_memdup ()
+function may fail for any reason specified for the
+.BR aligned_alloc (3)
+function.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lb lb lb
+l l l.
+Interface	Attribute	Value
+T{
+.BR libsimple_aligned_memdupa (),
+.br
+.BR libsimple_aligned_memdup (),
+.br
+.BR libsimple_enaligned_memdup (),
+.br
+.BR libsimple_ealigned_memdup (),
+T}	Thread safety	MT-Safe
+T{
+.BR libsimple_aligned_memdupa (),
+.br
+.BR libsimple_aligned_memdup (),
+.br
+.BR libsimple_enaligned_memdup (),
+.br
+.BR libsimple_ealigned_memdup (),
+T}	Async-signal safety	AS-Safe
+T{
+.BR libsimple_aligned_memdupa (),
+.br
+.BR libsimple_aligned_memdup (),
+.br
+.BR libsimple_enaligned_memdup (),
+.br
+.BR libsimple_ealigned_memdup (),
+T}	Async-cancel safety	AC-Safe
+.TE
+.SH EXAMPLES
+None.
+.SH APPLICATION USAGE
+None.
+.SH RATIONALE
+None.
+.SH FUTURE DIRECTIONS
+None.
+.SH NOTES
+None.
+.SH BUGS
+None.
+.SH SEE ALSO
+.BR libsimple_memdup (3),
+.BR libsimple_enstrndup (3),
+.BR libsimple_enstrdup (3),
+.BR strndup (3),
+.BR strdup (3)
diff --git a/man/libsimple_aligned_memdupa.3 b/man/libsimple_aligned_memdupa.3
new file mode 120000
index 0000000..a9c2fef
--- /dev/null
+++ b/man/libsimple_aligned_memdupa.3
@@ -0,0 +1 @@
+libsimple_aligned_memdup.3
\ No newline at end of file
diff --git a/man/libsimple_ealigned_memdup.3 b/man/libsimple_ealigned_memdup.3
new file mode 120000
index 0000000..b6e0dd2
--- /dev/null
+++ b/man/libsimple_ealigned_memdup.3
@@ -0,0 +1 @@
+libsimple_enaligned_memdup.3
\ No newline at end of file
diff --git a/man/libsimple_ememdup.3 b/man/libsimple_ememdup.3
new file mode 120000
index 0000000..b7ce69c
--- /dev/null
+++ b/man/libsimple_ememdup.3
@@ -0,0 +1 @@
+libsimple_enmemdup.3
\ No newline at end of file
diff --git a/man/libsimple_enaligned_memdup.3 b/man/libsimple_enaligned_memdup.3
new file mode 120000
index 0000000..a9c2fef
--- /dev/null
+++ b/man/libsimple_enaligned_memdup.3
@@ -0,0 +1 @@
+libsimple_aligned_memdup.3
\ No newline at end of file
diff --git a/man/libsimple_enmemdup.3 b/man/libsimple_enmemdup.3
new file mode 120000
index 0000000..ff9fc97
--- /dev/null
+++ b/man/libsimple_enmemdup.3
@@ -0,0 +1 @@
+libsimple_memdup.3
\ No newline at end of file
diff --git a/man/libsimple_enstrdup.3 b/man/libsimple_enstrdup.3
new file mode 100644
index 0000000..c65f13e
--- /dev/null
+++ b/man/libsimple_enstrdup.3
@@ -0,0 +1,119 @@
+.TH LIBSIMPLE_ENSTRDUP 3 2018-10-27 libsimple
+.SH NAME
+libsimple_enstrdup \- duplicate a string
+.SH SYNOPSIS
+.nf
+#include <libsimple.h>
+
+char *libsimple_strdupa(const char *\fIs\fP);
+char *libsimple_enstrdup(int \fIstatus\fP, const char *\fIs\fP);
+static inline char *libsimple_estrdup(const char *\fIs\fP);
+
+#ifndef strdupa
+# define strdupa libsimple_strdupa
+#endif
+#ifndef enstrdup
+# define enstrdup libsimple_enstrdup
+#endif
+#ifndef estrdup
+# define estrdup libsimple_estrdup
+#endif
+.fi
+.PP
+Link with
+.IR \-lsimple .
+.SH DESCRIPTION
+The
+.BR libsimple_enstrdup ()
+and
+.BR libsimple_estrdup ()
+functions are versions of the
+.BR strdup (3)
+function that call the
+.BR libsimple_enprintf (3)
+function on failure, causing the process to print
+an error message and exit. See
+.BR libsimple_enprintf (3)
+for more information.
+.PP
+The
+.BR libsimple_strdupa ()
+function is implemented as a macro and is a version
+of the
+.BR strdup (3)
+function that uses allocates the memory on the stack
+rather than on the heap, causing the return pointer
+to become invalid when the calling function returns.
+.SH RETURN VALUE
+Upon successful completion, the
+.BR libsimple_strdupa (),
+.BR libsimple_enstrdup (),
+and
+.BR libsimple_estrdup ()
+functions return a non-null pointer, on failure the
+.BR libsimple_enstrdup (),
+and
+.BR libsimple_estrdup ()
+functions exit the process group. The
+.BR libsimple_strdupa ()
+function cannot fail, however the kernel
+can kill the process with a
+.B SIGSEGV
+signal if the memory cannot be allocated.
+.PP
+The returned pointer should be deallocated when it
+is no longer needed, except for the pointer returned
+by the
+.BR libsimple_strdupa ()
+function, it is automatically deallocated when the
+calling function returns.
+.SH ERRORS
+None.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lb lb lb
+l l l.
+Interface	Attribute	Value
+T{
+.BR libsimple_strdupa (),
+.br
+.BR libsimple_enstrdup (),
+.br
+.BR libsimple_estrdup (),
+T}	Thread safety	MT-Safe
+T{
+.BR libsimple_strdupa (),
+.br
+.BR libsimple_enstrdup (),
+.br
+.BR libsimple_estrdup (),
+T}	Async-signal safety	AS-Safe
+T{
+.BR libsimple_strdupa (),
+.br
+.BR libsimple_enstrdup (),
+.br
+.BR libsimple_estrdup (),
+T}	Async-cancel safety	AC-Safe
+.TE
+.SH EXAMPLES
+None.
+.SH APPLICATION USAGE
+None.
+.SH RATIONALE
+None.
+.SH FUTURE DIRECTIONS
+None.
+.SH NOTES
+None.
+.SH BUGS
+None.
+.SH SEE ALSO
+.BR libsimple_enstrndup (3),
+.BR libsimple_memdup (3),
+.BR libsimple_aligned_memdup (3),
+.BR strndup (3),
+.BR strdup (3)
diff --git a/man/libsimple_enstrndup.3 b/man/libsimple_enstrndup.3
new file mode 100644
index 0000000..d8d6882
--- /dev/null
+++ b/man/libsimple_enstrndup.3
@@ -0,0 +1,119 @@
+.TH LIBSIMPLE_ENSTRNDUP 3 2018-10-27 libsimple
+.SH NAME
+libsimple_enstrndup \- duplicate the beginning of a string
+.SH SYNOPSIS
+.nf
+#include <libsimple.h>
+
+char *libsimple_strndupa(const char *\fIs\fP, size_t \fIn\fP);
+char *libsimple_enstrndup(int \fIstatus\fP, const char *\fIs\fP, size_t \fIn\fP);
+static inline char *libsimple_estrndup(const char *\fIs\fP, size_t \fIn\fP);
+
+#ifndef strndupa
+# define strndupa libsimple_strndupa
+#endif
+#ifndef enstrndup
+# define enstrndup libsimple_enstrndup
+#endif
+#ifndef estrndup
+# define estrndup libsimple_estrndup
+#endif
+.fi
+.PP
+Link with
+.IR \-lsimple .
+.SH DESCRIPTION
+The
+.BR libsimple_enstrndup ()
+and
+.BR libsimple_estrndup ()
+functions are versions of the
+.BR strndup (3)
+function that call the
+.BR libsimple_enprintf (3)
+function on failure, causing the process to print
+an error message and exit. See
+.BR libsimple_enprintf (3)
+for more information.
+.PP
+The
+.BR libsimple_strndupa ()
+function is implemented as a macro and is a version
+of the
+.BR strndup (3)
+function that uses allocates the memory on the stack
+rather than on the heap, causing the return pointer
+to become invalid when the calling function returns.
+.SH RETURN VALUE
+Upon successful completion, the
+.BR libsimple_strndupa (),
+.BR libsimple_enstrndup (),
+and
+.BR libsimple_estrndup ()
+functions return a non-null pointer, on failure the
+.BR libsimple_enstrndup (),
+and
+.BR libsimple_estrndup ()
+functions exit the process group. The
+.BR libsimple_strndupa ()
+function cannot fail, however the kernel
+can kill the process with a
+.B SIGSEGV
+signal if the memory cannot be allocated.
+.PP
+The returned pointer should be deallocated when it
+is no longer needed, except for the pointer returned
+by the
+.BR libsimple_strndupa ()
+function, it is automatically deallocated when the
+calling function returns.
+.SH ERRORS
+None.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lb lb lb
+l l l.
+Interface	Attribute	Value
+T{
+.BR libsimple_strndupa (),
+.br
+.BR libsimple_enstrndup (),
+.br
+.BR libsimple_estrndup (),
+T}	Thread safety	MT-Safe
+T{
+.BR libsimple_strndupa (),
+.br
+.BR libsimple_enstrndup (),
+.br
+.BR libsimple_estrndup (),
+T}	Async-signal safety	AS-Safe
+T{
+.BR libsimple_strndupa (),
+.br
+.BR libsimple_enstrndup (),
+.br
+.BR libsimple_estrndup (),
+T}	Async-cancel safety	AC-Safe
+.TE
+.SH EXAMPLES
+None.
+.SH APPLICATION USAGE
+None.
+.SH RATIONALE
+None.
+.SH FUTURE DIRECTIONS
+None.
+.SH NOTES
+None.
+.SH BUGS
+None.
+.SH SEE ALSO
+.BR libsimple_enstrdup (3),
+.BR libsimple_memdup (3),
+.BR libsimple_aligned_memdup (3),
+.BR strndup (3),
+.BR strdup (3)
diff --git a/man/libsimple_estrdup.3 b/man/libsimple_estrdup.3
new file mode 120000
index 0000000..e8f7b76
--- /dev/null
+++ b/man/libsimple_estrdup.3
@@ -0,0 +1 @@
+libsimple_enstrdup.3
\ No newline at end of file
diff --git a/man/libsimple_estrndup.3 b/man/libsimple_estrndup.3
new file mode 120000
index 0000000..e2011e0
--- /dev/null
+++ b/man/libsimple_estrndup.3
@@ -0,0 +1 @@
+libsimple_enstrndup.3
\ No newline at end of file
diff --git a/man/libsimple_memdup.3 b/man/libsimple_memdup.3
new file mode 100644
index 0000000..8aa3586
--- /dev/null
+++ b/man/libsimple_memdup.3
@@ -0,0 +1,148 @@
+.TH LIBSIMPLE_MEMDUP 3 2018-10-27 libsimple
+.SH NAME
+libsimple_memdup \- duplicate bytes in memory
+.SH SYNOPSIS
+.nf
+#include <libsimple.h>
+
+void *libsimple_memdupa(const void *\fIs\fP, size_t \fIn\fP);
+void *libsimple_memdup(const void *\fIs\fP, size_t \fIn\fP);
+void *libsimple_enmemdup(int \fIstatus\fP, const void *\fIs\fP, size_t \fIn\fP);
+static inline void *libsimple_ememdup(const void *\fIs\fP, size_t \fIn\fP);
+
+#ifndef memdupa
+# define memdupa libsimple_memdupa
+#endif
+#ifndef memdup
+# define memdup libsimple_memdup
+#endif
+#ifndef enmemdup
+# define enmemdup libsimple_enmemdup
+#endif
+#ifndef ememdup
+# define ememdup libsimple_ememdup
+#endif
+.fi
+.PP
+Link with
+.IR \-lsimple .
+.SH DESCRIPTION
+The
+.BR libsimple_memdup ()
+function constructs allocates memory and copies
+.I n
+first bytes from
+.I s
+into the new allocation.
+.PP
+The
+.BR libsimple_enmemdup ()
+and
+.BR libsimple_ememdup ()
+functions are versions of the
+.BR libsimple_memdup ()
+function that call the
+.BR libsimple_enprintf (3)
+function on failure, causing the process to print
+an error message and exit. See
+.BR libsimple_enprintf (3)
+for more information.
+.PP
+The
+.BR libsimple_memdupa ()
+function is implemented as a macro and is a version
+of the
+.BR libsimple_memdup ()
+function that uses allocates the memory on the stack
+rather than on the heap, causing the return pointer
+to become invalid when the calling function returns.
+.SH RETURN VALUE
+Upon successful completion, the
+.BR libsimple_memdupa (),
+.BR libsimple_memdup (),
+.BR libsimple_enmemdup (),
+and
+.BR libsimple_ememdup ()
+functions return a non-null pointer, on failure the
+.BR libsimple_memdup ()
+function returns
+.B NULL
+and set
+.I errno
+to indicate the error, and the
+.BR libsimple_enmemdup (),
+and
+.BR libsimple_ememdup ()
+functions exit the process group. The
+.BR libsimple_memdupa ()
+function cannot fail, however the kernel
+can kill the process with a
+.B SIGSEGV
+signal if the memory cannot be allocated.
+.PP
+The returned pointer should be deallocated when it
+is no longer needed, except for the pointer returned
+by the
+.BR libsimple_memdupa ()
+function, it is automatically deallocated when the
+calling function returns.
+.SH ERRORS
+The
+.BR libsimple_memdup ()
+function may fail for any reason specified for the
+.BR alloc (3)
+function.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lb lb lb
+l l l.
+Interface	Attribute	Value
+T{
+.BR libsimple_memdupa (),
+.br
+.BR libsimple_memdup (),
+.br
+.BR libsimple_enmemdup (),
+.br
+.BR libsimple_ememdup (),
+T}	Thread safety	MT-Safe
+T{
+.BR libsimple_memdupa (),
+.br
+.BR libsimple_memdup (),
+.br
+.BR libsimple_enmemdup (),
+.br
+.BR libsimple_ememdup (),
+T}	Async-signal safety	AS-Safe
+T{
+.BR libsimple_memdupa (),
+.br
+.BR libsimple_memdup (),
+.br
+.BR libsimple_enmemdup (),
+.br
+.BR libsimple_ememdup (),
+T}	Async-cancel safety	AC-Safe
+.TE
+.SH EXAMPLES
+None.
+.SH APPLICATION USAGE
+None.
+.SH RATIONALE
+None.
+.SH FUTURE DIRECTIONS
+None.
+.SH NOTES
+None.
+.SH BUGS
+None.
+.SH SEE ALSO
+.BR libsimple_aligned_memdup (3),
+.BR libsimple_enstrndup (3),
+.BR libsimple_enstrdup (3),
+.BR strndup (3),
+.BR strdup (3)
diff --git a/man/libsimple_memdupa.3 b/man/libsimple_memdupa.3
new file mode 120000
index 0000000..ff9fc97
--- /dev/null
+++ b/man/libsimple_memdupa.3
@@ -0,0 +1 @@
+libsimple_memdup.3
\ No newline at end of file
diff --git a/man/libsimple_strdupa.3 b/man/libsimple_strdupa.3
new file mode 120000
index 0000000..e8f7b76
--- /dev/null
+++ b/man/libsimple_strdupa.3
@@ -0,0 +1 @@
+libsimple_enstrdup.3
\ No newline at end of file
diff --git a/man/libsimple_strndupa.3 b/man/libsimple_strndupa.3
new file mode 120000
index 0000000..e2011e0
--- /dev/null
+++ b/man/libsimple_strndupa.3
@@ -0,0 +1 @@
+libsimple_enstrndup.3
\ No newline at end of file
diff --git a/man/memdup.3libsimple b/man/memdup.3libsimple
new file mode 120000
index 0000000..ff9fc97
--- /dev/null
+++ b/man/memdup.3libsimple
@@ -0,0 +1 @@
+libsimple_memdup.3
\ No newline at end of file
diff --git a/man/memdupa.3libsimple b/man/memdupa.3libsimple
new file mode 120000
index 0000000..9b957e5
--- /dev/null
+++ b/man/memdupa.3libsimple
@@ -0,0 +1 @@
+libsimple_memdupa.3
\ No newline at end of file
diff --git a/man/strdupa.3libsimple b/man/strdupa.3libsimple
new file mode 120000
index 0000000..17cc881
--- /dev/null
+++ b/man/strdupa.3libsimple
@@ -0,0 +1 @@
+libsimple_strdupa.3
\ No newline at end of file
diff --git a/man/strndupa.3libsimple b/man/strndupa.3libsimple
new file mode 120000
index 0000000..201bc24
--- /dev/null
+++ b/man/strndupa.3libsimple
@@ -0,0 +1 @@
+libsimple_strndupa.3
\ No newline at end of file