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-
- elf_error(3E) Silicon Graphics elf_error(3E)
-
- NAME
- elf_errmsg, elf_errno - error handling
-
- SYNOPSIS
- cc [flag ...] file ... -lelf [library ...]
-
- #include <libelf.h>
-
- const char *elf_errmsg(int err);
- int elf_errno(void);
-
- DESCRIPTION
- If an ELF library function fails, a program may call elf_errno to
- retrieve the library's internal error number. As a side effect, this
- function resets the internal error number to zero, which indicates no
- error.
-
- elf_errmsg takes an error number, err, and returns a null-terminated
- error message (with no trailing new-line) that describes the problem. A
- zero err retrieves a message for the most recent error. If no error has
- occurred, the return value is a null pointer (not a pointer to the null
- string). Using err of -1 also retrieves the most recent error, except it
- guarantees a non-null return value, even when no error has occurred. If
- no message is available for the given number, elf_errmsg returns a
- pointer to an appropriate message. This function does not have the side
- effect of clearing the internal error number.
-
- EXAMPLE
- The following fragment clears the internal error number and checks it
- later for errors. Unless an error occurs after the first call to
- elf_errno, the next call will return zero.
-
- (void)elf_errno();
- while (more_to_do)
- {
- /* processing ... */
- if ((err = elf_errno()) != 0)
- {
- msg = elf_errmsg(err);
- /* print msg */
- }
- }
-
- SEE ALSO
- elf(3E), elf_version(3E).
-
- Page 1 Release 6.2
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