diff options
Diffstat (limited to 'lib/fino.c')
| -rw-r--r-- | lib/fino.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/lib/fino.c b/lib/fino.c new file mode 100644 index 0000000..6beff86 --- /dev/null +++ b/lib/fino.c @@ -0,0 +1,148 @@ +/* + * fino.c -- find inode functions for lsof library + */ + + +/* + * Copyright 1997 Purdue Research Foundation, West Lafayette, Indiana + * 47907. All rights reserved. + * + * Written by Victor A. Abell + * + * This software is not subject to any license of the American Telephone + * and Telegraph Company or the Regents of the University of California. + * + * Permission is granted to anyone to use this software for any purpose on + * any computer system, and to alter it and redistribute it freely, subject + * to the following restrictions: + * + * 1. Neither the authors nor Purdue University are responsible for any + * consequences of the use of this software. + * + * 2. The origin of this software must not be misrepresented, either by + * explicit claim or by omission. Credit to the authors and Purdue + * University must appear in documentation and sources. + * + * 3. Altered versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * + * 4. This notice may not be removed or altered. + */ + + +/* + * fino.c -- find block (optional) and character device file inode numbers + * + * The caller must define: + * + * HASBLKDEV to activate the block device inode lookup + */ + + +#include "../machine.h" + +#if defined(HASBLKDEV) || defined(USE_LIB_FIND_CH_INO) + +# if !defined(lint) +static char copyright[] = +"@(#) Copyright 1997 Purdue Research Foundation.\nAll rights reserved.\n"; +static char *rcsid = "$Id: fino.c,v 1.5 2008/10/21 16:12:36 abe Exp $"; +# endif /* !defined(lint) */ + +#include "../lsof.h" + +#else /* !defined(HASBLKDEV) && !defined(USE_LIB_FIND_CH_INO) */ +char fino_d1[] = "d"; char *fino_d2 = fino_d1; +#endif /* defined(HASBLKDEV) || defined(USE_LIB_FIND_CH_INO) */ + + +#if defined(HASBLKDEV) +/* + * find_bl_ino() - find the inode number for a block device file + */ + +void +find_bl_ino() +{ + dev_t ldev, tdev; + int low, hi, mid; + + readdev(0); + +# if defined(HASDCACHE) +find_bl_ino_again: +# endif /* defined(HASDCACHE) */ + + low = mid = 0; + hi = BNdev - 1; + if (!Lf->dev_def || (Lf->dev != DevDev) || !Lf->rdev_def) + return; + ldev = Lf->rdev; + while (low <= hi) { + mid = (low + hi) / 2; + tdev = BSdev[mid]->rdev; + if (ldev < tdev) + hi = mid - 1; + else if (ldev > tdev) + low = mid + 1; + else { + +# if defined(HASDCACHE) + if (DCunsafe && !BSdev[mid]->v && !vfy_dev(BSdev[mid])) + goto find_bl_ino_again; +# endif /* defined(HASDCACHE) */ + + Lf->inode = BSdev[mid]->inode; + if (Lf->inp_ty == 0) + Lf->inp_ty = 1; + return; + } + } +} +#endif /* defined(HASBLKDEV) */ + + +#if defined(USE_LIB_FIND_CH_INO) +/* + * find_ch_ino() - find the inode number for a character device file + */ + +void +find_ch_ino() +{ + dev_t ldev, tdev; + int low, hi, mid; + + readdev(0); + +# if defined(HASDCACHE) +find_ch_ino_again: +# endif /* defined(HASDCACHE) */ + + low = mid = 0; + hi = Ndev - 1; + if (!Lf->dev_def || (Lf->dev != DevDev) || !Lf->rdev_def) + return; + ldev = Lf->rdev; + while (low <= hi) { + mid = (low + hi) / 2; + tdev = Sdev[mid]->rdev; + if (ldev < tdev) + hi = mid - 1; + else if (ldev > tdev) + low = mid + 1; + else { + +# if defined(HASDCACHE) + if (DCunsafe && !Sdev[mid]->v && !vfy_dev(Sdev[mid])) + goto find_ch_ino_again; +# endif /* defined(HASDCACHE) */ + + Lf->inode = Sdev[mid]->inode; + if (Lf->inp_ty == 0) + Lf->inp_ty = 1; + return; + } + } +} +#endif /* defined(USE_LIB_FIND_CH_INO) */ |