1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
62  * imgp->args->begin_argv is the minimal successful exit requirement.
64  * If the given file is a shell-script, then the first line will start
66  * of the shell-interpreter to run, followed by zero or more tokens.
69  *    arg[0] -> The name of interpreter as specified after `#!' in the
72  *    arg[1] -> *If* there are any additional tokens on the first line,
77  *    arg[x] -> the full pathname of the script.  This will either be
80  *  arg[x+1] -> all the arguments that were specified on the original
87  * HISTORICAL NOTE: From 1993 to mid-2005, FreeBSD parsed out the tokens as
101 	const char *image_header = imgp->image_header;  in exec_shell_imgact()
110 		return (-1);  in exec_shell_imgact()
114 	 *	script. :-)  in exec_shell_imgact()
116 	if (imgp->interpreted & IMGACT_SHELL)  in exec_shell_imgact()
119 	imgp->interpreted |= IMGACT_SHELL;  in exec_shell_imgact()
124 	 * valid -- the actual file might be much shorter than the page.  in exec_shell_imgact()
127 	error = VOP_GETATTR(imgp->vp, &vattr, imgp->proc->p_ucred);  in exec_shell_imgact()
152 	if (interpe - interpb >= MAXINTERP)  in exec_shell_imgact()
156 	 * Find the beginning of the options (if any), and the end-of-line.  in exec_shell_imgact()
157 	 * Then trim the trailing blanks off the value.  Note that some  in exec_shell_imgact()
158 	 * other operating systems do *not* trim the trailing whitespace...  in exec_shell_imgact()
168 	while (--ihp > optb && ((*ihp == ' ') || (*ihp == '\t')))  in exec_shell_imgact()
171 	if (imgp->args->fname != NULL) {  in exec_shell_imgact()
172 		fname = imgp->args->fname;  in exec_shell_imgact()
176 		sbuf_printf(sname, "/dev/fd/%d", imgp->args->fd);  in exec_shell_imgact()
189 	offset = interpe - interpb + 1;			/* interpreter */  in exec_shell_imgact()
191 		offset += opte - optb + 1;  in exec_shell_imgact()
193 	length = (imgp->args->argc == 0) ? 0 :  in exec_shell_imgact()
194 	    strlen(imgp->args->begin_argv) + 1;		/* bytes to delete */  in exec_shell_imgact()
196 	error = exec_args_adjust_args(imgp->args, length, offset);  in exec_shell_imgact()
209 	if (imgp->args->argc == 0)  in exec_shell_imgact()
210 		imgp->args->argc = 1;  in exec_shell_imgact()
211 	imgp->args->argc++;  in exec_shell_imgact()
215 	 * the interpreter name and options-string.  in exec_shell_imgact()
217 	length = interpe - interpb;  in exec_shell_imgact()
218 	bcopy(interpb, imgp->args->begin_argv, length);  in exec_shell_imgact()
219 	*(imgp->args->begin_argv + length) = '\0';  in exec_shell_imgact()
222 		length = opte - optb;  in exec_shell_imgact()
223 		bcopy(optb, imgp->args->begin_argv + offset, length);  in exec_shell_imgact()
224 		*(imgp->args->begin_argv + offset + length) = '\0';  in exec_shell_imgact()
226 		imgp->args->argc++;  in exec_shell_imgact()
231 	 * use and copy the interpreter's name to imgp->interpreter_name  in exec_shell_imgact()
234 	error = copystr(fname, imgp->args->begin_argv + offset,  in exec_shell_imgact()
235 	    imgp->args->stringspace, NULL);  in exec_shell_imgact()
238 		imgp->interpreter_name = imgp->args->begin_argv;  in exec_shell_imgact()