diff options
Diffstat (limited to 'mdk-stage1/sysfs')
| -rw-r--r-- | mdk-stage1/sysfs/Makefile | 39 | ||||
| -rw-r--r-- | mdk-stage1/sysfs/libsysfs.h | 90 | ||||
| -rw-r--r-- | mdk-stage1/sysfs/sysfs.h | 64 | ||||
| -rw-r--r-- | mdk-stage1/sysfs/sysfs_attr.c | 241 | ||||
| -rw-r--r-- | mdk-stage1/sysfs/sysfs_utils.c | 59 |
5 files changed, 0 insertions, 493 deletions
diff --git a/mdk-stage1/sysfs/Makefile b/mdk-stage1/sysfs/Makefile deleted file mode 100644 index e3f965c43..000000000 --- a/mdk-stage1/sysfs/Makefile +++ /dev/null @@ -1,39 +0,0 @@ - #****************************************************************************** - # - # Guillaume Cottenceau (gc) - # Olivier Blin (blino) - # - # Copyright 2006 Mandriva - # - # This software may be freely redistributed under the terms of the GNU - # public license. - # - # You should have received a copy of the GNU General Public License - # along with this program; if not, write to the Free Software - # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - # - #***************************************************************************** - -# minimal sysfs library ripped from sysfsutils-2.0.0 - -top_dir = .. - -include $(top_dir)/Makefile.common - -TARGET = libsysfs.a - -all: $(TARGET) - -clean: - rm -f *.o $(TARGET) - -FLAGS = -D__linux__ -Wall -Werror -Wno-deprecated-declarations -Os -fomit-frame-pointer -pipe -c -I.. -D_BSD_SOURCE - -OBJS = sysfs_attr.o sysfs_utils.o - -$(TARGET): $(OBJS) - ar -cru $@ $^ - ranlib $@ - -$(OBJS): %.o: %.c - $(DIET) gcc $(FLAGS) $(INCLUDES) -c $< -o $@ diff --git a/mdk-stage1/sysfs/libsysfs.h b/mdk-stage1/sysfs/libsysfs.h deleted file mode 100644 index 7bdf54fea..000000000 --- a/mdk-stage1/sysfs/libsysfs.h +++ /dev/null @@ -1,90 +0,0 @@ -/* - * libsysfs.h - * - * Header Definitions for libsysfs - * - * Copyright (C) IBM Corp. 2004-2005 - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ -#ifndef _LIBSYSFS_H_ -#define _LIBSYSFS_H_ - -#include <sys/types.h> -#include <string.h> - -#define SYSFS_FSTYPE_NAME "sysfs" -#define SYSFS_PROC_MNTS "/proc/mounts" -#define SYSFS_BUS_NAME "bus" -#define SYSFS_CLASS_NAME "class" -#define SYSFS_BLOCK_NAME "block" -#define SYSFS_DEVICES_NAME "devices" -#define SYSFS_DRIVERS_NAME "drivers" -#define SYSFS_MODULE_NAME "module" -#define SYSFS_NAME_ATTRIBUTE "name" -#define SYSFS_MOD_PARM_NAME "parameters" -#define SYSFS_MOD_SECT_NAME "sections" -#define SYSFS_UNKNOWN "unknown" -#define SYSFS_PATH_ENV "SYSFS_PATH" - -#define SYSFS_PATH_MAX 256 -#define SYSFS_NAME_LEN 64 -#define SYSFS_BUS_ID_SIZE 32 - -/* mount path for sysfs, can be overridden by exporting SYSFS_PATH */ -#define SYSFS_MNT_PATH "/sys" - -enum sysfs_attribute_method { - SYSFS_METHOD_SHOW = 0x01, /* attr can be read by user */ - SYSFS_METHOD_STORE = 0x02, /* attr can be changed by user */ -}; - -/* - * NOTE: - * 1. We have the statically allocated "name" as the first element of all - * the structures. This feature is used in the "sorter" function for dlists - * 2. As is the case with attrlist - * 3. As is the case with path - */ -struct sysfs_attribute { - char name[SYSFS_NAME_LEN]; - char path[SYSFS_PATH_MAX]; - char *value; - unsigned short len; /* value length */ - enum sysfs_attribute_method method; /* show and store */ -}; - -#ifdef __cplusplus -extern "C" { -#endif - -/* - * Function Prototypes - */ -extern int sysfs_get_name_from_path(const char *path, char *name, size_t len); - -/* sysfs directory and file access */ -extern void sysfs_close_attribute(struct sysfs_attribute *sysattr); -extern struct sysfs_attribute *sysfs_open_attribute(const char *path); -extern int sysfs_read_attribute(struct sysfs_attribute *sysattr); -extern int sysfs_write_attribute(struct sysfs_attribute *sysattr, - const char *new_value, size_t len); - -#ifdef __cplusplus -} -#endif - -#endif /* _LIBSYSFS_H_ */ diff --git a/mdk-stage1/sysfs/sysfs.h b/mdk-stage1/sysfs/sysfs.h deleted file mode 100644 index 76754a421..000000000 --- a/mdk-stage1/sysfs/sysfs.h +++ /dev/null @@ -1,64 +0,0 @@ -/* - * sysfs.h - * - * Internal Header Definitions for libsysfs - * - * Copyright (C) IBM Corp. 2003-2005 - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ -#ifndef _SYSFS_H_ -#define _SYSFS_H_ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <ctype.h> -#include <dirent.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <errno.h> - -#define safestrcpy(to, from) strncpy(to, from, sizeof(to)-1) -#define safestrcat(to, from) strncat(to, from, sizeof(to) - strlen(to)-1) - -#define safestrcpymax(to, from, max) \ -do { \ - to[max-1] = '\0'; \ - strncpy(to, from, max-1); \ -} while (0) - -#define safestrcatmax(to, from, max) \ -do { \ - to[max-1] = '\0'; \ - strncat(to, from, max - strlen(to)-1); \ -} while (0) - -extern struct sysfs_attribute *get_attribute(void *dev, const char *name); -extern struct dlist *read_dir_subdirs(const char *path); -extern struct dlist *read_dir_links(const char *path); -extern struct dlist *get_dev_attributes_list(void *dev); -extern struct dlist *get_attributes_list(struct dlist *alist, const char *path); - -/* Debugging */ -#ifdef DEBUG -#define dprintf(format, arg...) fprintf(stderr, format, ## arg) -#else -#define dprintf(format, arg...) do { } while (0) -#endif - -#endif /* _SYSFS_H_ */ diff --git a/mdk-stage1/sysfs/sysfs_attr.c b/mdk-stage1/sysfs/sysfs_attr.c deleted file mode 100644 index 6d6771188..000000000 --- a/mdk-stage1/sysfs/sysfs_attr.c +++ /dev/null @@ -1,241 +0,0 @@ -/* - * sysfs_dir.c - * - * Directory utility functions for libsysfs - * - * Copyright (C) IBM Corp. 2003-2005 - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ -#include "libsysfs.h" -#include "sysfs.h" - -/** - * sysfs_close_attribute: closes and cleans up attribute - * @sysattr: attribute to close. - */ -void sysfs_close_attribute(struct sysfs_attribute *sysattr) -{ - if (sysattr) { - if (sysattr->value) - free(sysattr->value); - free(sysattr); - } -} - -/** - * alloc_attribute: allocates and initializes attribute structure - * returns struct sysfs_attribute with success and NULL with error. - */ -static struct sysfs_attribute *alloc_attribute(void) -{ - return (struct sysfs_attribute *) - calloc(1, sizeof(struct sysfs_attribute)); -} - -/** - * sysfs_open_attribute: creates sysfs_attribute structure - * @path: path to attribute. - * returns sysfs_attribute struct with success and NULL with error. - */ -struct sysfs_attribute *sysfs_open_attribute(const char *path) -{ - struct sysfs_attribute *sysattr = NULL; - struct stat fileinfo; - - if (!path) { - errno = EINVAL; - return NULL; - } - sysattr = alloc_attribute(); - if (!sysattr) { - dprintf("Error allocating attribute at %s\n", path); - return NULL; - } - if (sysfs_get_name_from_path(path, sysattr->name, - SYSFS_NAME_LEN) != 0) { - dprintf("Error retrieving attrib name from path: %s\n", path); - sysfs_close_attribute(sysattr); - return NULL; - } - safestrcpy(sysattr->path, path); - if ((stat(sysattr->path, &fileinfo)) != 0) { - dprintf("Stat failed: No such attribute?\n"); - sysattr->method = 0; - free(sysattr); - sysattr = NULL; - } else { - if (fileinfo.st_mode & S_IRUSR) - sysattr->method |= SYSFS_METHOD_SHOW; - if (fileinfo.st_mode & S_IWUSR) - sysattr->method |= SYSFS_METHOD_STORE; - } - - return sysattr; -} - -/** - * sysfs_read_attribute: reads value from attribute - * @sysattr: attribute to read - * returns 0 with success and -1 with error. - */ -int sysfs_read_attribute(struct sysfs_attribute *sysattr) -{ - char *fbuf = NULL; - char *vbuf = NULL; - ssize_t length = 0; - long pgsize = 0; - int fd; - - if (!sysattr) { - errno = EINVAL; - return -1; - } - if (!(sysattr->method & SYSFS_METHOD_SHOW)) { - dprintf("Show method not supported for attribute %s\n", - sysattr->path); - errno = EACCES; - return -1; - } - pgsize = getpagesize(); - fbuf = (char *)calloc(1, pgsize+1); - if (!fbuf) { - dprintf("calloc failed\n"); - return -1; - } - if ((fd = open(sysattr->path, O_RDONLY)) < 0) { - dprintf("Error reading attribute %s\n", sysattr->path); - free(fbuf); - return -1; - } - length = read(fd, fbuf, pgsize); - if (length < 0) { - dprintf("Error reading from attribute %s\n", sysattr->path); - close(fd); - free(fbuf); - return -1; - } - if (sysattr->len > 0) { - if ((sysattr->len == length) && - (!(strncmp(sysattr->value, fbuf, length)))) { - close(fd); - free(fbuf); - return 0; - } - free(sysattr->value); - } - sysattr->len = length; - close(fd); - vbuf = (char *)realloc(fbuf, length+1); - if (!vbuf) { - dprintf("realloc failed\n"); - free(fbuf); - return -1; - } - sysattr->value = vbuf; - - return 0; -} - -/** - * sysfs_write_attribute: write value to the attribute - * @sysattr: attribute to write - * @new_value: value to write - * @len: length of "new_value" - * returns 0 with success and -1 with error. - */ -int sysfs_write_attribute(struct sysfs_attribute *sysattr, - const char *new_value, size_t len) -{ - int fd; - int length; - - if (!sysattr || !new_value || len == 0) { - errno = EINVAL; - return -1; - } - - if (!(sysattr->method & SYSFS_METHOD_STORE)) { - dprintf ("Store method not supported for attribute %s\n", - sysattr->path); - errno = EACCES; - return -1; - } - if (sysattr->method & SYSFS_METHOD_SHOW) { - /* - * read attribute again to see if we can get an updated value - */ - if ((sysfs_read_attribute(sysattr))) { - dprintf("Error reading attribute\n"); - return -1; - } - if ((strncmp(sysattr->value, new_value, sysattr->len)) == 0 && - (len == sysattr->len)) { - dprintf("Attr %s already has the requested value %s\n", - sysattr->name, new_value); - return 0; - } - } - /* - * open O_WRONLY since some attributes have no "read" but only - * "write" permission - */ - if ((fd = open(sysattr->path, O_WRONLY)) < 0) { - dprintf("Error reading attribute %s\n", sysattr->path); - return -1; - } - - length = write(fd, new_value, len); - if (length < 0) { - dprintf("Error writing to the attribute %s - invalid value?\n", - sysattr->name); - close(fd); - return -1; - } else if ((unsigned int)length != len) { - dprintf("Could not write %zd bytes to attribute %s\n", - len, sysattr->name); - /* - * since we could not write user supplied number of bytes, - * restore the old value if one available - */ - if (sysattr->method & SYSFS_METHOD_SHOW) { - length = write(fd, sysattr->value, sysattr->len); - close(fd); - return -1; - } - } - - /* - * Validate length that has been copied. Alloc appropriate area - * in sysfs_attribute. Verify first if the attribute supports reading - * (show method). If it does not, do not bother - */ - if (sysattr->method & SYSFS_METHOD_SHOW) { - if (length != sysattr->len) { - sysattr->value = (char *)realloc - (sysattr->value, length); - sysattr->len = length; - safestrcpymax(sysattr->value, new_value, length); - } else { - /*"length" of the new value is same as old one */ - safestrcpymax(sysattr->value, new_value, length); - } - } - - close(fd); - return 0; -} - diff --git a/mdk-stage1/sysfs/sysfs_utils.c b/mdk-stage1/sysfs/sysfs_utils.c deleted file mode 100644 index a0354a8f8..000000000 --- a/mdk-stage1/sysfs/sysfs_utils.c +++ /dev/null @@ -1,59 +0,0 @@ -/* - * sysfs_utils.c - * - * System utility functions for libsysfs - * - * Copyright (C) IBM Corp. 2003-2005 - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ -#include "libsysfs.h" -#include "sysfs.h" - -/** - * sysfs_get_name_from_path: returns last name from a "/" delimited path - * @path: path to get name from - * @name: where to put name - * @len: size of name - */ -int sysfs_get_name_from_path(const char *path, char *name, size_t len) -{ - char tmp[SYSFS_PATH_MAX]; - char *n = NULL; - - if (!path || !name || len == 0) { - errno = EINVAL; - return -1; - } - memset(tmp, 0, SYSFS_PATH_MAX); - safestrcpy(tmp, path); - n = strrchr(tmp, '/'); - if (n == NULL) { - errno = EINVAL; - return -1; - } - if (*(n+1) == '\0') { - *n = '\0'; - n = strrchr(tmp, '/'); - if (n == NULL) { - errno = EINVAL; - return -1; - } - } - n++; - safestrcpymax(name, n, len); - return 0; -} |