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001 /* Copyright (C) 2005 David Decotigny 001 /* Copyright (C) 2005 David Decotigny 002 Copyright (C) 2003 Thomas Petazzoni 002 Copyright (C) 2003 Thomas Petazzoni 003 003 004 This program is free software; you can redi 004 This program is free software; you can redistribute it and/or 005 modify it under the terms of the GNU Genera 005 modify it under the terms of the GNU General Public License 006 as published by the Free Software Foundatio 006 as published by the Free Software Foundation; either version 2 007 of the License, or (at your option) any lat 007 of the License, or (at your option) any later version. 008 008 009 This program is distributed in the hope tha 009 This program is distributed in the hope that it will be useful, 010 but WITHOUT ANY WARRANTY; without even the 010 but WITHOUT ANY WARRANTY; without even the implied warranty of 011 MERCHANTABILITY or FITNESS FOR A PARTICULAR 011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 012 GNU General Public License for more details 012 GNU General Public License for more details. 013 013 014 You should have received a copy of the GNU 014 You should have received a copy of the GNU General Public License 015 along with this program; if not, write to t 015 along with this program; if not, write to the Free Software 016 Foundation, Inc., 59 Temple Place - Suite 3 016 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 017 USA. 017 USA. 018 */ 018 */ 019 #ifndef _SOS_USER_LIBC_H_ 019 #ifndef _SOS_USER_LIBC_H_ 020 #define _SOS_USER_LIBC_H_ 020 #define _SOS_USER_LIBC_H_ 021 021 022 #include <types.h> 022 #include <types.h> 023 023 024 /** 024 /** 025 * @file libc.h 025 * @file libc.h 026 * 026 * 027 * The basic user C library for user programs 027 * The basic user C library for user programs 028 */ 028 */ 029 029 030 /** 030 /** 031 * The most important function of a C program 031 * The most important function of a C program ! ;) 032 */ 032 */ 033 void exit (int status) __attribute__((noreturn !! 033 void exit (int status) >> 034 __attribute__((noreturn, alias("_sos_exit"))); 034 035 035 036 036 /** 037 /** 037 * Function to duplicate the current running p 038 * Function to duplicate the current running process 038 */ 039 */ 039 pid_t fork(void) __attribute__ ((alias("_sos_ !! 040 pid_t fork(void) >> 041 __attribute__ ((alias("_sos_fork"))); 040 042 041 043 042 /** 044 /** 043 * Function to re-initialize the address space 045 * Function to re-initialize the address space of the current process 044 * with that of the program 'progname' 046 * with that of the program 'progname' 045 */ 047 */ 046 int exec(const char *progname) __attribute__ ( !! 048 int exec(const char *progname) >> 049 __attribute__ ((alias("_sos_exec"))); 047 050 048 051 >> 052 int nanosleep(unsigned long int sec, >> 053 unsigned long int nanosec) >> 054 __attribute__ ((alias("_sos_nanosleep"))); >> 055 049 /** 056 /** 050 * These flags (for mmap API) MUST be consiste 057 * These flags (for mmap API) MUST be consistent with those defined in 051 * paging.h and umem_vmm.h 058 * paging.h and umem_vmm.h 052 */ 059 */ 053 #define PROT_NONE 0 060 #define PROT_NONE 0 054 #define PROT_READ (1<<0) 061 #define PROT_READ (1<<0) 055 #define PROT_WRITE (1<<1) 062 #define PROT_WRITE (1<<1) 056 #define PROT_EXEC (1<<2) /* Not supported on 063 #define PROT_EXEC (1<<2) /* Not supported on IA32 */ 057 064 058 #define MAP_SHARED (1 << 0) 065 #define MAP_SHARED (1 << 0) 059 #define MAP_FIXED (1 << 31) 066 #define MAP_FIXED (1 << 31) 060 067 061 /** 068 /** 062 * Non standard version of mmap. Differences w 069 * Non standard version of mmap. Differences with standard version: 063 * - the resource to map is given by its "pat 070 * - the resource to map is given by its "path", not by a file descriptor 064 * - the offset is a signed 64bits, and MUST 071 * - the offset is a signed 64bits, and MUST be >= 0 (error otherwise) 065 * - no errno support 072 * - no errno support 066 */ 073 */ 067 void * mmap(void *start, size_t length, int pr !! 074 void * fakemmap(void *start, size_t length, int prot , int flags, 068 const char *path, loff_t offset); !! 075 const char *path, loff_t offset); 069 076 070 077 071 /** 078 /** 072 * Unmap the given user address interval 079 * Unmap the given user address interval 073 */ 080 */ 074 int munmap(void * start, size_t length) __attr !! 081 int munmap(void * start, size_t length) >> 082 __attribute__ ((alias("_sos_munmap"))); 075 083 076 084 077 /** 085 /** 078 * Change the access permissions of the given 086 * Change the access permissions of the given user address interval 079 */ 087 */ 080 int mprotect(const void *addr, size_t len, int !! 088 int mprotect(const void *addr, size_t len, int prot) >> 089 __attribute__ ((alias("_sos_mprotect"))); 081 090 082 091 083 092 084 /** 093 /** 085 * This flag tells mremap that the underlying 094 * This flag tells mremap that the underlying VR may be moved, when necessary 086 */ 095 */ 087 #define MREMAP_MAYMOVE (1 << 30) 096 #define MREMAP_MAYMOVE (1 << 30) 088 097 089 /** 098 /** 090 * Grow/shrink the end of the given mapping 099 * Grow/shrink the end of the given mapping 091 */ 100 */ 092 void * mremap(void * old_addr, size_t old_len, 101 void * mremap(void * old_addr, size_t old_len, 093 size_t new_len, 102 size_t new_len, 094 unsigned long flags); 103 unsigned long flags); 095 104 096 105 097 /** 106 /** 098 * Standard heap management API 107 * Standard heap management API 099 */ 108 */ 100 109 101 /** @note MT UNSAFE */ 110 /** @note MT UNSAFE */ 102 int brk(void *end_data_seg); 111 int brk(void *end_data_seg); 103 112 104 /** @note MT UNSAFE */ 113 /** @note MT UNSAFE */ 105 void *sbrk(ptrdiff_t increment); 114 void *sbrk(ptrdiff_t increment); 106 115 107 /** @note MT UNSAFE */ 116 /** @note MT UNSAFE */ 108 void * calloc (size_t nmemb, size_t size); 117 void * calloc (size_t nmemb, size_t size); 109 118 110 /** @note MT UNSAFE */ 119 /** @note MT UNSAFE */ 111 void * malloc (size_t size); 120 void * malloc (size_t size); >> 121 >> 122 /** @note Does nothing (not implemented yet) */ >> 123 void free(void *ptr); >> 124 >> 125 >> 126 /* >> 127 * Filesystem subsystem >> 128 */ >> 129 >> 130 int mount(const char *source, const char *target, >> 131 const char *filesystemtype, unsigned long mountflags, >> 132 const char *data) >> 133 __attribute__ ((alias("_sos_mount"))); >> 134 int umount(const char *target) >> 135 __attribute__ ((alias("_sos_umount"))); >> 136 void sync(void) >> 137 __attribute__ ((alias("_sos_sync"))); >> 138 >> 139 struct statvfs >> 140 { >> 141 size_t f_sz_total; /**< Total size */ >> 142 size_t f_sz_free; /**< Size left on device */ >> 143 unsigned int f_node_total;/**< Total allocatable FS nodes */ >> 144 unsigned int f_node_avail;/**< Number of available free FS nodes */ >> 145 unsigned int f_flags; >> 146 }; >> 147 >> 148 int statvfs(const char *path, struct statvfs *buf) >> 149 __attribute__ ((alias("_sos_statvfs"))); >> 150 >> 151 #define O_EXCL (1 << 0) >> 152 #define O_CREAT (1 << 1) >> 153 #define O_NOFOLLOW (1 << 2) >> 154 #define O_DIRECTORY (1 << 3) /* Incompatible with CREAT */ >> 155 #define O_SYNC (1 << 4) >> 156 >> 157 #define O_RDONLY (1 << 16) >> 158 #define O_WRONLY (1 << 17) >> 159 #define O_RDWR (O_RDONLY | O_WRONLY) >> 160 >> 161 /** >> 162 * FS access rights. Same as in kernel fs.h >> 163 */ >> 164 #define S_IRUSR 00400 >> 165 #define S_IWUSR 00200 >> 166 #define S_IXUSR 00100 >> 167 #define S_IRWXALL 07777 /* For symlinks */ >> 168 >> 169 int open(const char *pathname, int flags, /* mode_t mode */...); >> 170 >> 171 int close(int fd) >> 172 __attribute__ ((alias("_sos_close"))); >> 173 >> 174 int read(int fd, char * buf, size_t len); >> 175 int write(int fd, const char * buf, size_t len); >> 176 >> 177 /* Same as sos_seek_whence_t in kernel fs.h */ >> 178 #define SEEK_SET 42 >> 179 #define SEEK_CUR 24 >> 180 #define SEEK_END 84 >> 181 off_t lseek(int fd, off_t offset, int whence); >> 182 loff_t lseek64(int fd, loff_t offset, int whence); >> 183 void * mmap(void *start, size_t length, int prot , int flags, >> 184 int fd, loff_t offset); >> 185 int ftruncate(int fd, off_t length); >> 186 int ftruncate64(int fd, loff_t length) >> 187 __attribute__ ((alias("_sos_ftruncate64"))); >> 188 int fcntl(int fd, int cmd, int arg) >> 189 __attribute__ ((alias("_sos_fcntl"))); >> 190 >> 191 int creat(const char *pathname, mode_t mode) >> 192 __attribute__ ((alias("_sos_creat"))); >> 193 int link (const char *oldpath, const char *newpath) >> 194 __attribute__ ((alias("_sos_link"))); >> 195 int unlink(const char *pathname) >> 196 __attribute__ ((alias("_sos_unlink"))); >> 197 int rename(const char *oldpath, const char *newpath) >> 198 __attribute__ ((alias("_sos_rename"))); >> 199 int symlink(const char *target, const char *path) >> 200 __attribute__ ((alias("_sos_symlink"))); >> 201 >> 202 int mkdir(const char *pathname, mode_t mode) >> 203 __attribute__ ((alias("_sos_mkdir"))); >> 204 int rmdir(const char *pathname) >> 205 __attribute__ ((alias("_sos_rmdir"))); >> 206 >> 207 int chmod(const char *path, mode_t mode) >> 208 __attribute__ ((alias("_sos_chmod"))); >> 209 >> 210 struct dirent >> 211 { >> 212 unsigned long long int storage_location; >> 213 unsigned long long int offset_in_dirfile; >> 214 >> 215 /* Same as sos_fs_node_type_t in kernel fs.h */ >> 216 #define S_IFREG 0x42 >> 217 #define S_IFDIR 0x24 >> 218 #define S_IFLNK 0x84 >> 219 unsigned int type; >> 220 unsigned short namelen; >> 221 >> 222 #define SOS_FS_DIRENT_NAME_MAXLEN 128 >> 223 char name[SOS_FS_DIRENT_NAME_MAXLEN]; >> 224 }; >> 225 >> 226 /* Forward declaration (defined in libc.c) */ >> 227 struct sos_DIR_struct; >> 228 #define DIR struct sos_DIR_struct >> 229 >> 230 DIR *opendir(const char *name); >> 231 int dirfd(const DIR * dir); >> 232 struct dirent *readdir(DIR *dir); >> 233 int closedir(DIR *dir); >> 234 >> 235 struct stat >> 236 { >> 237 int st_type; >> 238 unsigned long long int st_storage_location; >> 239 int st_access_rights; >> 240 unsigned int st_nlink; >> 241 signed long long int st_size; >> 242 }; >> 243 >> 244 int stat(const char *file_name, struct stat *buf); >> 245 int lstat(const char *file_name, struct stat *buf); >> 246 >> 247 int chroot(const char *path) >> 248 __attribute__ ((alias("_sos_chroot"))); >> 249 int chdir(const char *path) >> 250 __attribute__ ((alias("_sos_chdir"))); >> 251 int fchdir(int fd) >> 252 __attribute__ ((alias("_sos_fchdir"))); >> 253 112 254 113 255 114 #endif /* _SOS_USER_LIBC_H_ */ 256 #endif /* _SOS_USER_LIBC_H_ */
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