diff options
Diffstat (limited to 'StdLib/LibC/StdLib/Environs.c')
| -rw-r--r-- | StdLib/LibC/StdLib/Environs.c | 282 |
1 files changed, 0 insertions, 282 deletions
diff --git a/StdLib/LibC/StdLib/Environs.c b/StdLib/LibC/StdLib/Environs.c deleted file mode 100644 index 15221a1260..0000000000 --- a/StdLib/LibC/StdLib/Environs.c +++ /dev/null @@ -1,282 +0,0 @@ -/** @file
- Implementation of the <stdlib.h> functions responsible for communication with
- the environment:
- - abort(void)
- - atexit(void(*handler)(void))
- - exit(int status)
- - _Exit(int status)
-
- Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
- This program and the accompanying materials are licensed and made available under
- the terms and conditions of the BSD License that accompanies this distribution.
- The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-#include <Uefi.h>
-#include <Library/UefiBootServicesTableLib.h>
-#include <Library/BaseLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/ShellLib.h>
-
-#include <LibConfig.h>
-
-#include <errno.h>
-#include <signal.h>
-#include <stdlib.h>
-#include <MainData.h>
-
-/** Internal worker function used by exit().
-**/
-void exitCleanup(INTN ExitVal);
-
-/* ################# Public Functions ################################### */
-
-/** The abort function causes abnormal program termination to occur, unless
- the signal SIGABRT is being caught and the signal handler does not return.
-
- Open streams with unwritten buffered data are not flushed, open
- streams are not closed, and temporary files are not removed by abort.
-
-**/
-void
-abort(void)
-{
- if (!gMD->aborting) {
- gMD->aborting = TRUE;
-
- if (gMD->cleanup != NULL) {
- gMD->cleanup();
- }
- }
- raise(SIGABRT);
- _Exit(EXIT_FAILURE); // In case raise returns.
-}
-
-/** The atexit function registers the function pointed to by func, to be
- called without arguments at normal program termination.
-
- The implementation shall support the registration of
- at least 32 functions.
-
- @return The atexit function returns zero if the registration succeeds,
- nonzero if it fails.
-**/
-int
-atexit(void (*handler)(void))
-{
- int retval = 1;
-
- if((handler != NULL) && (gMD->num_atexit < ATEXIT_MAX)) {
- gMD->atexit_handler[gMD->num_atexit++] = handler;
- retval = 0;
- }
- return retval;
-}
-
-/** The exit function causes normal program termination to occur. If more than
- one call to the exit function is executed by a program,
- the behavior is undefined.
-
- First, all functions registered by the atexit function are called, in the
- reverse order of their registration. If, during the call to any such function, a
- call to the longjmp function is made that would terminate the call to the
- registered function, the behavior is undefined.
-
- Next, all open streams with unwritten buffered data are flushed, all open
- streams are closed, and all files created by the tmpfile function
- are removed.
-
- The status returned to the host environment is determined in the same way
- as for the _Exit function.
-**/
-void
-exit(int status)
-{
- exitCleanup((INTN) status);
- _Exit(status);
-}
-
-/** The _Exit function causes normal program termination to occur and control
- to be returned to the host environment.
-
- No functions registered by the atexit function or signal handlers
- registered by the signal function are called. Open streams with unwritten
- buffered data are not flushed, open streams are not closed, and temporary
- files are not removed by abort.
-
- Finally, control is returned to the host environment. If the value of
- status is zero, or EXIT_SUCCESS, status is returned unchanged. If the value
- of status is EXIT_FAILURE, RETURN_ABORTED is returned.
- Otherwise, status is returned unchanged.
-**/
-void
-_Exit(int status)
-{
- gMD->ExitValue = status; // Save our exit status. Allows a status of 0.
- longjmp(gMD->MainExit, 0x55); // Get out of here. longjmp can't return 0. Use 0x55 for a non-zero value.
-
-#ifdef __GNUC__
- _Exit(status); /* Keep GCC happy - never reached */
-#endif
-}
-
-/** If string is a null pointer, the system function determines whether the
- host environment has a command processor. If string is not a null pointer,
- the system function passes the string pointed to by string to that command
- processor to be executed in a manner which the implementation shall
- document; this might then cause the program calling system to behave in a
- non-conforming manner or to terminate.
-
- @retval EXIT_FAILURE EFIerrno will contain the EFI status code
- indicating the cause of failure.
-
- @retval EXIT_SUCCESS EFIerrno will contain the EFI status returned
- by the executed command string.
- @retval 0 If string is NULL, 0 means a command processor
- is not available.
- @retval 1 If string is NULL, 1 means a command processor
- is available.
-**/
-int
-system(const char *string)
-{
- EFI_STATUS CmdStat;
- EFI_STATUS OpStat;
- EFI_HANDLE MyHandle = gImageHandle;
-
- if( string == NULL) {
- return 1;
- }
- (void)AsciiStrToUnicodeStr( string, gMD->UString);
- OpStat = ShellExecute( &MyHandle, gMD->UString, FALSE, NULL, &CmdStat);
- if(OpStat == RETURN_SUCCESS) {
- EFIerrno = CmdStat;
- return EXIT_SUCCESS;
- }
- EFIerrno = OpStat;
- return EXIT_FAILURE;
-}
-
-/** The getenv function searches an environment list, provided by the host
- environment, for a string that matches the string pointed to by name. The
- set of environment names and the method for altering the environment list
- are determined by the underlying UEFI Shell implementation.
-
- @return The getenv function returns a pointer to a string associated with
- the matched list member. The string pointed to shall not be
- modified by the program, but may be overwritten by a subsequent
- call to the getenv function. If the specified name cannot be
- found, a null pointer is returned.
-**/
-char *getenv(const char *name)
-{
- const CHAR16 *EfiEnv;
- char *retval = NULL;
-
- (void)AsciiStrToUnicodeStr( name, gMD->UString);
- EfiEnv = ShellGetEnvironmentVariable(gMD->UString);
- if(EfiEnv != NULL) {
- retval = UnicodeStrToAsciiStr( EfiEnv, gMD->ASgetenv);
- }
-
- return retval;
-}
-
-
-/**
- Add or update a variable in the environment list
-
- @param name Address of a zero terminated name string
- @param value Address of a zero terminated value string
- @param rewrite TRUE allows overwriting existing values
-
- @retval Returns 0 upon success
- @retval Returns -1 upon failure, sets errno with more information
-
- Errors
-
- EINVAL - name is NULL or points to a zero length string
- EALREADY - name already set and rewrite set to FALSE
- ENODEV - Unable to set non-volatile version of environment variable
- ENOMEM - Unable to set volatile version of environment variable
- ENOTSUP - Variable storage not supported
-
-**/
-int
-setenv (
- register const char * name,
- register const char * value,
- int rewrite
- )
-{
- CONST CHAR16 * HostName;
- int retval;
- EFI_STATUS Status;
- CHAR16 * UName;
- CHAR16 * UValue;
-
- //
- // Assume failure
- //
- retval = -1;
-
- //
- // Validate the inputs
- //
- errno = EINVAL;
- if (( NULL != name ) && ( 0 != *name )) {
- //
- // Get the storage locations for the unicode strings
- //
- UName = &gMD->UString[0];
- UValue = &gMD->UString2[0];
-
- //
- // Convert the strings
- //
- AsciiStrToUnicodeStr ( name, UName );
- AsciiStrToUnicodeStr ( value, UValue );
-
- //
- // Determine if the string is already present
- //
- errno = EALREADY;
- HostName = ShellGetEnvironmentVariable ( UName );
- if ( rewrite || ( NULL == HostName )) {
- //
- // Support systems that don't have non-volatile memory
- //
- errno = ENOMEM;
- Status = ShellSetEnvironmentVariable ( UName, UValue, TRUE );
- if ( EFI_ERROR ( Status )) {
- if ( EFI_UNSUPPORTED == Status ) {
- errno = ENOTSUP;
- }
- }
- else {
- //
- // Permanently set the environment variable
- //
- errno = ENODEV;
- Status = ShellSetEnvironmentVariable ( UName, UValue, FALSE );
- if ( !EFI_ERROR ( Status )) {
- //
- // Success
- //
- errno = 0;
- retval = 0;
- }
- }
- }
- }
-
- //
- // Return the operation status
- //
- return retval;
-}
-
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