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c39722aff2
Use the directory specified by the shell environment variable TMPDIR for temporary objects creation and ngdump job simulation. If TMPDIR is not set, then use "/tmp" for the mentioned purposes; While running ngdump job in 'dry-run' mode: . Don't format/mount the target dump device. Instead, create the bootmap file and the meta-file at the temporary mount point without mounting anything to it. Thus, the mentioned files to be acrually created in the "proxy" file system owning the temporary mount point; . Retrieve base disk info from the read-only dump device and complete that info with the block size of the proxy file system; Separate the steps on retrieving/setting file system block size into a dedicated procedure; Use definitions instead of hardcoded file names; Fix a bug in an error path (accessing freed memory); Make misc_open_simulate() and misc_open_exclusive() static; Update man pages with the requirements on the system environment (resources) for ngdump job being executed in dry-run mode; Provide hints for user (in stderr) in case when ngdump job in dry-run mode failed due to inappropriate system environment. Tested-by: Mikhail Zaslonko <zaslonko@linux.ibm.com> Reviewed-by: Mikhail Zaslonko <zaslonko@linux.ibm.com> Signed-off-by: Eduard Shishkin <edward6@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
90 lines
1.9 KiB
C
90 lines
1.9 KiB
C
/*
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* zipl - zSeries Initial Program Loader tool
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*
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* Functions to handle error messages
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*
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* Copyright IBM Corp. 2001, 2017
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include "error.h"
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#define ERROR_STRING_SIZE 1024
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static char error_reason_string[ERROR_STRING_SIZE];
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static char error_text_string[ERROR_STRING_SIZE];
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static int error_is_reason = 0;
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static int error_is_text = 0;
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/* Specify the actual reason why an operation failed by providing a formatted
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* text string FMT and a variable amount of extra arguments. */
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void
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error_reason(const char* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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vsnprintf(error_reason_string, ERROR_STRING_SIZE, fmt, args);
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va_end(args);
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error_is_reason = 1;
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}
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/* Specify the (higher level) tool operation failure by providing a formatted
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* text string FMT and a variable amount of extra arguments. */
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void
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error_text(const char* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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vsnprintf(error_text_string, ERROR_STRING_SIZE, fmt, args);
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va_end(args);
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error_is_text = 1;
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}
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/* Clear a previously specified error_reason() message. */
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void
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error_clear_reason(void)
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{
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error_is_reason = 0;
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}
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/* Clear a previously specified error_text() message. */
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void
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error_clear_text(void)
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{
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error_is_text = 0;
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}
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/* Print out the error reason and text message to stderr. */
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void
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error_print(void)
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{
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if (error_is_text && error_is_reason) {
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fprintf(stderr, "Error: %s: %s\n", error_text_string,
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error_reason_string);
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} else if (error_is_text)
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fprintf(stderr, "Error: %s\n", error_text_string);
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else if (error_is_reason)
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fprintf(stderr, "Error: %s\n", error_reason_string);
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else
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fprintf(stderr, "Error: An unspecified error occurred\n");
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}
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int is_error(const char *this)
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{
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return strcmp(error_reason_string, this) == 0;
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}
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