diff options
Diffstat (limited to 'linux-user/loader.h')
-rw-r--r-- | linux-user/loader.h | 61 |
1 files changed, 52 insertions, 9 deletions
diff --git a/linux-user/loader.h b/linux-user/loader.h index 324e5c872a..da6591fff0 100644 --- a/linux-user/loader.h +++ b/linux-user/loader.h @@ -18,6 +18,48 @@ #ifndef LINUX_USER_LOADER_H #define LINUX_USER_LOADER_H +typedef struct { + const void *cache; + unsigned int cache_size; + int fd; +} ImageSource; + +/** + * imgsrc_read: Read from ImageSource + * @dst: destination for read + * @offset: offset within file for read + * @len: size of the read + * @img: ImageSource to read from + * @errp: Error details. + * + * Read into @dst, using the cache when possible. + */ +bool imgsrc_read(void *dst, off_t offset, size_t len, + const ImageSource *img, Error **errp); + +/** + * imgsrc_read_alloc: Read from ImageSource + * @offset: offset within file for read + * @size: size of the read + * @img: ImageSource to read from + * @errp: Error details. + * + * Read into newly allocated memory, using the cache when possible. + */ +void *imgsrc_read_alloc(off_t offset, size_t len, + const ImageSource *img, Error **errp); + +/** + * imgsrc_mmap: Map from ImageSource + * + * If @src has a file descriptor, pass on to target_mmap. Otherwise, + * this is "mapping" from a host buffer, which resolves to memcpy. + * Therefore, flags must be MAP_PRIVATE | MAP_FIXED; the argument is + * retained for clarity. + */ +abi_long imgsrc_mmap(abi_ulong start, abi_ulong len, int prot, + int flags, const ImageSource *src, abi_ulong offset); + /* * Read a good amount of data initially, to hopefully get all the * program headers loaded. @@ -29,15 +71,16 @@ * used when loading binaries. */ struct linux_binprm { - char buf[BPRM_BUF_SIZE] __attribute__((aligned)); - abi_ulong p; - int fd; - int e_uid, e_gid; - int argc, envc; - char **argv; - char **envp; - char *filename; /* Name of binary */ - int (*core_dump)(int, const CPUArchState *); /* coredump routine */ + char buf[BPRM_BUF_SIZE] __attribute__((aligned)); + ImageSource src; + abi_ulong p; + int fd; + int e_uid, e_gid; + int argc, envc; + char **argv; + char **envp; + char *filename; /* Name of binary */ + int (*core_dump)(int, const CPUArchState *); /* coredump routine */ }; void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); |