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https://github.com/ibm-s390-linux/s390-tools.git
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2238eb820f
_zg_err_errno() should save the current errno value before calling any libc functions because they could change it. Failing to do so, may result in _zg_err_errno() displaying an incorrect error message. Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
73 lines
1.2 KiB
C
73 lines
1.2 KiB
C
/*
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* Copyright IBM Corp. 2001, 2017, 2021
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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 "lib/util_libc.h"
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#include "zg.h"
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static inline void _zg_err(const char *fmt, va_list ap)
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{
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fprintf(stderr, "%s: ", "zgetdump");
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vfprintf(stderr, fmt, ap);
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fprintf(stderr, "\n");
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}
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static inline void _zg_err_errno(const char *fmt, va_list ap)
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{
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const int errno_backup = errno;
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fflush(stdout);
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fprintf(stderr, "%s: ", "zgetdump");
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vfprintf(stderr, fmt, ap);
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fprintf(stderr, " (%s)", strerror(errno_backup));
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fprintf(stderr, "\n");
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}
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void zg_err(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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_zg_err(fmt, ap);
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va_end(ap);
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}
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void zg_err_exit(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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_zg_err(fmt, ap);
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va_end(ap);
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zg_exit(1);
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}
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void zg_err_exit_errno(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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_zg_err_errno(fmt, ap);
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va_end(ap);
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zg_exit(1);
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}
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void zg_abort(const char *fmt, ...)
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{
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char *newfmt;
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va_list ap;
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newfmt = util_strcat_realloc(util_strdup("Internal Error: "), fmt);
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va_start(ap, fmt);
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_zg_err(newfmt, ap);
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va_end(ap);
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free(newfmt);
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abort();
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}
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