AT&T UNIX™PC Unix System V Users Manual - tenox

EXEC (2) EXEC (2)
Search perm1ss10n is denied for a directory listed in the
new process file's path prefix. [EACCES]
The new process file is not an ordinary file. [EACCESJ
The new process file mode denies execution permission.
[EACCES[
The exec is not an execlp or execvp , and the new process
file has the appropriate access permission but an invalid
magic number in its header. [ENOEXECJ
The new process file is a pure procedure (shared text) file
that is currently open for writing by some process.
[ETXTBSYJ
The new process requires more memory than is allowed by
the system-imposed maximum MAXMEM. [ENOMEM]
The number of bytes in the new process's argument list is
greater than the system-imposed limit of 5120 bytes.
[E2BIGJ
The new process file is not as long as indicated by the size
values in its header. [EFAULT]
Path , argv, or envp point to an illegal address. [EF AUL T]
RETURN VALUE
If exec returns to the calling process an error has occurred; the
return value will be -1 and errno will be set to indicate the error.
SEE ALSO
exit(2), fork(2), environ(S).
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