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Add perror()

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git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@5061 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo
2012-08-28 19:01:14 +00:00
parent bbe3db55f2
commit f53d3ecc71
13 changed files with 396 additions and 21 deletions
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nuttx/lib/Kconfig
+42 -2
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@@ -23,7 +23,7 @@ config NUNGET_CHARS
---help---
Number of characters that can be buffered by ungetc() (Only if NFILE_STREAMS > 0)
config CONFIG_LIB_HOMEDIR
config LIB_HOMEDIR
string "Home directory"
default "/"
depends on !DISABLE_ENVIRON
@@ -51,6 +51,46 @@ config LIBC_FLOATINGPOINT
By default, floating point
support in printf, sscanf, etc. is disabled.
config LIBC_STRERROR
bool "Enable strerror"
default n
---help---
strerror() is useful because it decodes 'errno' values into a human readable
strings. But it can also require a lot of memory. If this option is selected,
strerror() will still exist in the build but it will not decode error values.
This option should be used by other logic to decide if it should use strerror()
or not. For example, the NSH application will not use strerror() if this
option is not selected; perror() will not use strerror() is this option is not
selected (see also NSH_STRERROR).
config LIBC_STRERROR_SHORT
bool "Use short error descriptions in strerror()"
default n
depends on LIBC_STRERROR
---help---
If this option is selected, then strerror() will use a shortened string when
it decodes the error. Specifically, strerror() is simply use the string that
is the common name for the error. For example, the 'errno' value of 2 will
produce the string "No such file or directory" is LIBC_STRERROR_SHORT
is not defined but the string "ENOENT" is LIBC_STRERROR_SHORT is defined.
config LIBC_PERROR_STDOUT
bool "perror() to stdout"
default n
---help---
POSIX requires that perror() provide its output on stderr. This option may
be defined, however, to provide perror() output that is serialized with
other stdout messages.
config LIBC_PERROR_DEVNAME
string "perror() to device"
default "/dev/console"
depends on !LIBC_PERROR_STDOUT
---help---
Another non-standard option is to provide perror() output to a logging device
or file. LIBC_PERROR_DEVNAME may be defined to be any write-able,
character device (or file).
config ARCH_LOWPUTC
bool "Low-level console output"
default "y"
@@ -68,7 +108,7 @@ config ENABLE_ARCH_OPTIMIZED_FUN
The architecture may provide custom versions of certain
standard header files:
config ARCH_MATH_H, CONFIG_ARCH_STDBOOL_H, CONFIG_ARCH_STDINT_H
config ARCH_MATH_H, ARCH_STDBOOL_H, ARCH_STDINT_H
if ENABLE_ARCH_OPTIMIZED_FUN
config ARCH_MEMCPY