28 lines
651 B
C
28 lines
651 B
C
#include "stdio_impl.h"
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#include <string.h>
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#include <signal.h>
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#include <errno.h>
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void psignal(int sig, const char *msg)
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{
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FILE *f = stderr;
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char *s = strsignal(sig);
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FLOCK(f);
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/* Save stderr's orientation and encoding rule, since psignal is not
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* permitted to change them. Save errno and restore it if there is no
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* error since fprintf might change it even on success but psignal is
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* not permitted to do so. */
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void *old_locale = f->locale;
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int old_mode = f->mode;
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int old_errno = errno;
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if (fprintf(f, "%s%s%s\n", msg?msg:"", msg?": ":"", s)>=0)
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errno = old_errno;
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f->mode = old_mode;
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f->locale = old_locale;
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FUNLOCK(f);
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}
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