HP-UX Reference (11i v3 07/02) - 2 System Calls (vol 5)

exec(2) exec(2)

[EINVAL] argv points to NULL and null pointer dereferencing is allowed. In this case, NULL is a

valid address, but is considered an invalid argument.

[ELOOP] Too many symbolic links were encountered in translating the path name.

[ENAMETOOLONG]

The executable ﬁle’s path name or the interpreter’s path name exceeds

PATH_MAX

bytes, or the length of a component of the path name exceeds

NAME_MAX bytes while

_POSIX_NO_TRUNC

is in effect.

[ENOENT] path points to an empty string.

[ENOENT] One or more components of the executable ﬁle’s path name or the interpreter’s path

name do not exist.

[ENOEXEC] The executable ﬁle is shorter than indicated by the size values in its header, or is other-

wise inconsistent. The reliable detection of this error is implementation dependent.

[ENOEXEC] The function call is not

execlp() or execvp(), and the executable ﬁle has the

appropriate access permission, but there is neither a valid magic number nor the charac-

ters

#! as the ﬁrst two bytes of the ﬁle’s initial line.

[ENOEXEC] The number of bytes in the initial line of a script ﬁle exceeds the system’s maximum.

[ENOMEM] The new process requires more memory than is available or allowed by the system-

imposed maximum.

[ENOTDIR] A component of the executable ﬁle’s path preﬁx or the interpreter’s path preﬁx is not a

directory.

[EPERM] The process does not have sufﬁcient privileges.

[ETXTBSY] The executable ﬁle is currently open for writing.

WARNINGS

Unsharable executable ﬁles are not supported. These are ﬁles whose EXEC_MAGIC magic number was

produced with the -N option of ld (see ld(1)).

It is recommended to use the execve() call in multi-threaded applications to avoid possible deadlocks.

DEPENDENCIES

HP Process Resource Manager

If the optional HP Process Resource Manager (PRM) software is installed and conﬁgured, the process’s pro-

cess resource group ID is not changed by exec*(). See prmconﬁg(1) for a description of how to conﬁgure

HP PRM, and prmconf(4) for the deﬁnition of process resource group.