| execve.2 (21570) | execve.2 (23660) |
|---|---|
| 1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 15 unchanged lines hidden (view full) --- 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" | 1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 15 unchanged lines hidden (view full) --- 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" |
| 32.\" @(#)execve.2 8.3 (Berkeley) 1/24/94 | 32.\" @(#)execve.2 8.5 (Berkeley) 6/1/94 |
| 33.\" | 33.\" |
| 34.Dd January 24, 1994 | 34.Dd June 1, 1994 |
| 35.Dt EXECVE 2 36.Os BSD 4 37.Sh NAME 38.Nm execve 39.Nd execute a file 40.Sh SYNOPSIS 41.Fd #include <unistd.h> 42.Ft int --- 18 unchanged lines hidden (view full) --- 61.Pp 62.Bd -filled -offset indent -compact 63.Sy \&#! 64.Em interpreter 65.Bq Em arg 66.Ed 67.Pp 68When an interpreter file is | 35.Dt EXECVE 2 36.Os BSD 4 37.Sh NAME 38.Nm execve 39.Nd execute a file 40.Sh SYNOPSIS 41.Fd #include <unistd.h> 42.Ft int --- 18 unchanged lines hidden (view full) --- 61.Pp 62.Bd -filled -offset indent -compact 63.Sy \&#! 64.Em interpreter 65.Bq Em arg 66.Ed 67.Pp 68When an interpreter file is |
| 69.Fn execve Ap d , | 69.\" was .Fn execve Ap d , 70\fBexecve\fP'd, |
| 70the system | 71the system |
| 71.Fn execve Ap s | 72.\" was .Fn execve Ap s 73\fBexecve\fP's |
| 72runs the specified 73.Em interpreter . 74If the optional 75.Em arg 76is specified, it becomes the first argument to the 77.Em interpreter , 78and the name of the originally | 74runs the specified 75.Em interpreter . 76If the optional 77.Em arg 78is specified, it becomes the first argument to the 79.Em interpreter , 80and the name of the originally |
| 79.Fn execve Ap d | 81.\" was .Fn execve Ap d 82\fBexecve\fP'd |
| 80file becomes the second argument; 81otherwise, the name of the originally | 83file becomes the second argument; 84otherwise, the name of the originally |
| 82.Fn execve Ap d | 85.\" was .Fn execve Ap d 86\fBexecve\fP'd |
| 83file becomes the first argument. The original arguments are shifted over to 84become the subsequent arguments. The zeroth argument, normally the name of the | 87file becomes the first argument. The original arguments are shifted over to 88become the subsequent arguments. The zeroth argument, normally the name of the |
| 85.Fn execve Ap d | 89.\" was .Fn execve Ap d 90\fBexecve\fP'd |
| 86file, is left unchanged. 87.Pp 88The argument 89.Fa argv 90is a pointer to a null-terminated array of 91character pointers to null-terminated character strings. 92These strings construct the argument list to be made available to the new 93process. At least one argument must be present in --- 41 unchanged lines hidden (view full) --- 135The real user ID, real group ID and 136other group IDs of the new process image remain the same as the calling 137process image. 138After any set-user-ID and set-group-ID processing, 139the effective user ID is recorded as the saved set-user-ID, 140and the effective group ID is recorded as the saved set-group-ID. 141These values may be used in changing the effective IDs later (see 142.Xr setuid 2 ) . | 91file, is left unchanged. 92.Pp 93The argument 94.Fa argv 95is a pointer to a null-terminated array of 96character pointers to null-terminated character strings. 97These strings construct the argument list to be made available to the new 98process. At least one argument must be present in --- 41 unchanged lines hidden (view full) --- 140The real user ID, real group ID and 141other group IDs of the new process image remain the same as the calling 142process image. 143After any set-user-ID and set-group-ID processing, 144the effective user ID is recorded as the saved set-user-ID, 145and the effective group ID is recorded as the saved set-group-ID. 146These values may be used in changing the effective IDs later (see 147.Xr setuid 2 ) . |
| 148.ne 1i |
|
| 143.Pp 144The new process also inherits the following attributes from 145the calling process: 146.Pp 147.Bl -column parent_process_ID -offset indent -compact 148.It process ID Ta see Xr getpid 2 149.It parent process ID Ta see Xr getppid 2 150.It process group ID Ta see Xr getpgrp 2 --- 76 unchanged lines hidden (view full) --- 227.It Bq Er EACCES 228The new process file mode denies execute permission. 229.It Bq Er ENOEXEC 230The new process file has the appropriate access 231permission, but has an invalid magic number in its header. 232.It Bq Er ETXTBSY 233The new process file is a pure procedure (shared text) 234file that is currently open for writing or reading by some process. | 149.Pp 150The new process also inherits the following attributes from 151the calling process: 152.Pp 153.Bl -column parent_process_ID -offset indent -compact 154.It process ID Ta see Xr getpid 2 155.It parent process ID Ta see Xr getppid 2 156.It process group ID Ta see Xr getpgrp 2 --- 76 unchanged lines hidden (view full) --- 233.It Bq Er EACCES 234The new process file mode denies execute permission. 235.It Bq Er ENOEXEC 236The new process file has the appropriate access 237permission, but has an invalid magic number in its header. 238.It Bq Er ETXTBSY 239The new process file is a pure procedure (shared text) 240file that is currently open for writing or reading by some process. |
| 241.ne 1i |
|
| 235.It Bq Er ENOMEM 236The new process requires more virtual memory than 237is allowed by the imposed maximum 238.Pq Xr getrlimit 2 . 239.It Bq Er E2BIG 240The number of bytes in the new process's argument list 241is larger than the system-imposed limit. 242The limit in the system as released is 65536 bytes --- 35 unchanged lines hidden --- | 242.It Bq Er ENOMEM 243The new process requires more virtual memory than 244is allowed by the imposed maximum 245.Pq Xr getrlimit 2 . 246.It Bq Er E2BIG 247The number of bytes in the new process's argument list 248is larger than the system-imposed limit. 249The limit in the system as released is 65536 bytes --- 35 unchanged lines hidden --- |