elf_errmsg(3elf) [plan9 man page]
elf_errmsg(3ELF) ELF Library Functions elf_errmsg(3ELF) 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 can call elf_errno() to retrieve the library's internal error number. As a side effect, this function resets the internal error number to 0, which indicates no error. The elf_errmsg() function 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. EXAMPLES
Example 1: A sample program of calling the elf_errmsg() function. 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 0. (void)elf_errno(); /* processing ... */ while (more_to_do) { if ((err = elf_errno()) != 0) { /* print msg */ msg = elf_errmsg(err); } } ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Stable | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
elf(3ELF), libelf(3LIB), attributes(5) SunOS 5.10 11 Jul 2001 elf_errmsg(3ELF)
Check Out this Related Man Page
elf_errmsg(3ELF) ELF Library Functions elf_errmsg(3ELF) 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 can call elf_errno() to retrieve the library's internal error number. As a side effect, this function resets the internal error number to 0, which indicates no error. The elf_errmsg() function 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. EXAMPLES
Example 1: A sample program of calling the elf_errmsg() function. 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 0. (void)elf_errno(); /* processing ... */ while (more_to_do) { if ((err = elf_errno()) != 0) { /* print msg */ msg = elf_errmsg(err); } } ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Stable | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
elf(3ELF), libelf(3LIB), attributes(5) SunOS 5.10 11 Jul 2001 elf_errmsg(3ELF)