svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
extendedFILE(7)
ex...E(7)Standards, Environments, Macros, Character Sets, and miscellaneyx...E(7)
NAME
extendedFILE - enable extended FILE facility usage
SYNOPSIS
$ ulimit -n N_file_descriptors
$ LD_PRELOAD_32=/usr/lib/extendedFILE.so.1 application [arg...]
DESCRIPTION
The extendedFILE.so.1 is an obsolete, empty, library, kept for binary
compatibility only.
Its old purpose, the use of file descriptors larger than 255 for 32 bit
binaries, is now the default behavior in Oracle Solaris.
The libc library now handles the environment variables originally han‐
dled by extendedFILE.so.1
ENVIRONMENT VARIABLES
The following environment variables control the behavior of the ex‐
tended FILE facility.
_STDIO_BADFD This variable takes an integer representing the
lowest file descriptor, which will be made unal‐
locatable. This action provides a protection
mechanism so that applications that abuse inter‐
faces do not experience silent data corruption.
The value must be between 3 and 255 inclusive.
By specifying none, the extended FILE facility
is disabled.
_STDIO_BADFD_SIGNAL This variable takes an integer or string repre‐
senting any valid signal. See signal.h(3HEAD)
for valid values or strings. This environment
variable causes the specified signal to be sent
to the application if certain exceptional cases
are detected during the use of this facility.
The default signal is none.
EXAMPLES
Example 1 Limit the number of file descriptors and FILE standard I/O
structures.
The following example limits the number of file descriptors and FILE
standard I/O structures to 1000.
$ ulimit -n 1000
$ application [arg...]
Example 2 Enable the extended FILE facility.
The following example enables the extended FILE facility. See en‐
able_extended_FILE_stdio(3C) for more examples.
$ ulimit -n 1000
$ _STDIO_BADFD=100 _STDIO_BADFD_SIGNAL=SIGABRT \
application [arg ...]
Example 3 Set up the extended FILE environment and start the applica‐
tion.
The following shell script first sets up the proper extended FILE envi‐
ronment and then starts the application:
#!/bin/sh
if [ $# = 0 ]; then
echo "usage: $0 application [arguments...]"
exit 1
fi
ulimit -n 1000
# _STDIO_BADFD=196; export _STDIO_BADFD
# _STDIO_BADFD_SIGNAL=SIGABRT; export _STDIO_BADFD_SIGNAL
"$@"
FILES
/usr/lib/extendedFILE.so.1 enabling library
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Availabilitysystem/library (32-bit) _ Interface Stabil‐
ityCommitted _ MT-LevelSafe
SEE ALSO
limit(1), open(2), enable_extended_FILE_stdio(3C), fdopen(3C),
fopen(3C), popen(3C), stdio(3C), signal.h(3HEAD), attributes(7)
WARNINGS
The following displayed message
Application violated extended FILE safety mechanism.
Please read the man page for extendedFILE.
Aborting
is an indication that your application is modifying the internal file
descriptor field of the FILE structure from standard I/O. Continued use
of this extended FILE facility could harm your data. Do not use the ex‐
tended FILE facility with your application.
Oracle Solaris 11.4 03 Jul 2020 ex...E(7)