This patch contains routines which initialize eppic and register call back function which will be called whenever a new eppic macro is loaded using eppic_load() API. The registered call back function executes the eppic macro as soon as it is loaded.
Signed-off-by: Aravinda Prasad <[email protected]> --- Makefile | 5 +++ extension_eppic.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++ extension_eppic.h | 23 +++++++++++++++ 3 files changed, 111 insertions(+), 1 deletions(-) create mode 100644 extension_eppic.c create mode 100644 extension_eppic.h diff --git a/Makefile b/Makefile index e6c4e5d..5b8df31 100644 --- a/Makefile +++ b/Makefile @@ -69,7 +69,7 @@ $(OBJ_ARCH): $(SRC_ARCH) $(CC) $(CFLAGS_ARCH) -c -o ./$@ ./$(@:.o=.c) makedumpfile: $(SRC) $(OBJ_PART) $(OBJ_ARCH) - $(CC) $(CFLAGS) $(LDFLAGS) $(OBJ_PART) $(OBJ_ARCH) -o $@ $< $(LIBS) + $(CC) $(CFLAGS) $(LDFLAGS) $(OBJ_PART) $(OBJ_ARCH) -rdynamic -o $@ $< $(LIBS) echo .TH MAKEDUMPFILE 8 \"$(DATE)\" \"makedumpfile v$(VERSION)\" \"Linux System Administrator\'s Manual\" > temp.8 grep -v "^.TH MAKEDUMPFILE 8" makedumpfile.8 >> temp.8 mv temp.8 makedumpfile.8 @@ -79,6 +79,9 @@ makedumpfile: $(SRC) $(OBJ_PART) $(OBJ_ARCH) mv temp.5 makedumpfile.conf.5 gzip -c ./makedumpfile.conf.5 > ./makedumpfile.conf.5.gz +eppic_makedumpfile.so: extension_eppic.c + $(CC) $(CFLAGS) -shared -rdynamic -o $@ extension_eppic.c -fPIC -leppic -ltinfo + clean: rm -f $(OBJ) $(OBJ_PART) $(OBJ_ARCH) makedumpfile makedumpfile.8.gz makedumpfile.conf.5.gz diff --git a/extension_eppic.c b/extension_eppic.c new file mode 100644 index 0000000..fc47b1f --- /dev/null +++ b/extension_eppic.c @@ -0,0 +1,84 @@ +/* + * extension_eppic.c + * + * Created by: Aravinda Prasad <[email protected]> + * + * Copyright (C) 2012 IBM Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include <stdio.h> +#include <string.h> +#include <sys/types.h> +#include <fcntl.h> + +#include "extension_eppic.h" + +/* + * Most of the functions included in this file performs similar + * functionality as in the applications/crash/eppic.c file part of + * eppic, but uses DWARF instead of gdb. Few of the functions are + * reused directly which are acknowledged in the comment before the + * function. + */ + +/* + * This is the call back function called when a new eppic macro is + * loaded. This will execute the loaded eppic macro. + * + * "fname" is considered as the entry point of an eppic macro only if + * the following functions are defined: + * + * fname_help() + * fname_usage() + * + * These functions have no relevance in makedumpfile context as + * makedumpfile automatically executes the eppic macro by calling the + * entry point and user will not have any option to execute the usage + * or help functions. However they are required to identify the entry + * points in the eppic macro. + */ +void +reg_callback(char *name, int load) +{ + char fname[MAX_SYMNAMELEN]; + + /* Nothing to process for unload request */ + if (!load) + return; + + snprintf(fname, sizeof(fname), "%s_help", name); + if (eppic_chkfname(fname, 0)) { + snprintf(fname, sizeof(fname), "%s_usage", name); + if (eppic_chkfname(fname, 0)) + eppic_cmd(name, NULL, 0); + } + return; +} + + +/* Initialize eppic */ +int +eppic_init() +{ + if (eppic_open() >= 0) { + + /* Register call back functions */ + eppic_apiset(NULL, 3, sizeof(long), 0); + + /* set the new function callback */ + eppic_setcallback(reg_callback); + + return 0; + } + return 1; +} + diff --git a/extension_eppic.h b/extension_eppic.h new file mode 100644 index 0000000..ca74ce4 --- /dev/null +++ b/extension_eppic.h @@ -0,0 +1,23 @@ +/* + * extension_eppic.h + * + * Created by: Aravinda Prasad <[email protected]> + * + * Copyright (C) 2012 IBM Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#ifndef _EXTENSION_EPPIC_H +#define _EXTENSION_EPPIC_H + +#include "eppic_api.h" + +#endif /* _EXTENSION_EPPIC_H */ _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
