diff options
Diffstat (limited to 'usr/src/lib/libproc/common/pr_open.c')
| -rw-r--r-- | usr/src/lib/libproc/common/pr_open.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/usr/src/lib/libproc/common/pr_open.c b/usr/src/lib/libproc/common/pr_open.c new file mode 100644 index 0000000000..5ea4ea1393 --- /dev/null +++ b/usr/src/lib/libproc/common/pr_open.c @@ -0,0 +1,183 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright (c) 1997-2001 by Sun Microsystems, Inc. + * All rights reserved. + */ + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <fcntl.h> +#include <errno.h> +#include "libproc.h" + +/* + * open() system call -- executed by subject process. + */ +int +pr_open(struct ps_prochandle *Pr, const char *filename, int flags, mode_t mode) +{ + sysret_t rval; /* return value from open() */ + argdes_t argd[3]; /* arg descriptors for open() */ + argdes_t *adp; + int error; + + if (Pr == NULL) /* no subject process */ + return (open(filename, flags, mode)); + + adp = &argd[0]; /* filename argument */ + adp->arg_value = 0; + adp->arg_object = (void *)filename; + adp->arg_type = AT_BYREF; + adp->arg_inout = AI_INPUT; + adp->arg_size = strlen(filename)+1; + + adp++; /* flags argument */ + adp->arg_value = (long)flags; + adp->arg_object = NULL; + adp->arg_type = AT_BYVAL; + adp->arg_inout = AI_INPUT; + adp->arg_size = 0; + + adp++; /* mode argument */ + adp->arg_value = (long)mode; + adp->arg_object = NULL; + adp->arg_type = AT_BYVAL; + adp->arg_inout = AI_INPUT; + adp->arg_size = 0; + + error = Psyscall(Pr, &rval, SYS_open, 3, &argd[0]); + + if (error) { + errno = (error > 0)? error : ENOSYS; + return (-1); + } + return (rval.sys_rval1); +} + +/* + * creat() system call -- executed by subject process. + */ +int +pr_creat(struct ps_prochandle *Pr, const char *filename, mode_t mode) +{ + sysret_t rval; /* return value from creat() */ + argdes_t argd[2]; /* arg descriptors for creat() */ + argdes_t *adp; + int error; + + if (Pr == NULL) /* no subject process */ + return (creat(filename, mode)); + + adp = &argd[0]; /* filename argument */ + adp->arg_value = 0; + adp->arg_object = (void *)filename; + adp->arg_type = AT_BYREF; + adp->arg_inout = AI_INPUT; + adp->arg_size = strlen(filename)+1; + + adp++; /* mode argument */ + adp->arg_value = (long)mode; + adp->arg_object = NULL; + adp->arg_type = AT_BYVAL; + adp->arg_inout = AI_INPUT; + adp->arg_size = 0; + + error = Psyscall(Pr, &rval, SYS_creat, 2, &argd[0]); + + if (error) { + errno = (error > 0)? error : ENOSYS; + return (-1); + } + return (rval.sys_rval1); +} + +/* + * close() system call -- executed by subject process. + */ +int +pr_close(struct ps_prochandle *Pr, int fd) +{ + sysret_t rval; /* return value from close() */ + argdes_t argd[1]; /* arg descriptors for close() */ + argdes_t *adp; + int error; + + if (Pr == NULL) /* no subject process */ + return (close(fd)); + + adp = &argd[0]; /* fd argument */ + adp->arg_value = (int)fd; + adp->arg_object = NULL; + adp->arg_type = AT_BYVAL; + adp->arg_inout = AI_INPUT; + adp->arg_size = 0; + + error = Psyscall(Pr, &rval, SYS_close, 1, &argd[0]); + + if (error) { + errno = (error > 0)? error : ENOSYS; + return (-1); + } + return (rval.sys_rval1); +} + +/* + * access() system call -- executed by subject process. + */ +int +pr_access(struct ps_prochandle *Pr, const char *path, int amode) +{ + sysret_t rval; /* return from access() */ + argdes_t argd[2]; /* arg descriptors for access() */ + argdes_t *adp; + int err; + + if (Pr == NULL) /* no subject process */ + return (access(path, amode)); + + adp = &argd[0]; /* path argument */ + adp->arg_value = 0; + adp->arg_object = (void *)path; + adp->arg_type = AT_BYREF; + adp->arg_inout = AI_INPUT; + adp->arg_size = strlen(path) + 1; + + adp++; /* amode argument */ + adp->arg_value = (long)amode; + adp->arg_object = NULL; + adp->arg_type = AT_BYVAL; + adp->arg_inout = AI_INPUT; + adp->arg_size = 0; + + err = Psyscall(Pr, &rval, SYS_access, 2, &argd[0]); + + if (err) { + errno = (err > 0) ? err : ENOSYS; + return (-1); + } + + return (rval.sys_rval1); +} |