diff options
Diffstat (limited to 'nuttx/binfmt/libelf/libelf_init.c')
-rw-r--r-- | nuttx/binfmt/libelf/libelf_init.c | 57 |
1 files changed, 56 insertions, 1 deletions
diff --git a/nuttx/binfmt/libelf/libelf_init.c b/nuttx/binfmt/libelf/libelf_init.c index f2744eae7..e1b9f73d6 100644 --- a/nuttx/binfmt/libelf/libelf_init.c +++ b/nuttx/binfmt/libelf/libelf_init.c @@ -40,6 +40,7 @@ #include <nuttx/config.h> #include <sys/stat.h> + #include <stdint.h> #include <string.h> #include <fcntl.h> @@ -78,6 +79,52 @@ ****************************************************************************/ /**************************************************************************** + * Name: elf_filelen + * + * Description: + * Get the size of the ELF file + * + * Returned Value: + * 0 (OK) is returned on success and a negated errno is returned on + * failure. + * + ****************************************************************************/ + +static inline int elf_filelen(FAR struct elf_loadinfo_s *loadinfo, + FAR const char *filename) +{ + struct stat buf; + int ret; + + /* Get the file stats */ + + ret = stat(filename, &buf); + if (ret < 0) + { + int errval = errno; + bdbg("Failed to fstat file: %d\n", errval); + return -errval; + } + + /* Verify that it is a regular file */ + + if (!S_ISREG(buf.st_mode)) + { + bdbg("Not a regular file. mode: %d\n", buf.st_mode); + return -ENOENT; + } + + /* TODO: Verify that the file is readable. Not really important because + * we will detect this when we try to open the file read-only. + */ + + /* Return the size of the file in the loadinfo structure */ + + loadinfo->filelen = buf.st_size; + return OK; +} + +/**************************************************************************** * Public Functions ****************************************************************************/ @@ -104,7 +151,15 @@ int elf_init(FAR const char *filename, FAR struct elf_loadinfo_s *loadinfo) memset(loadinfo, 0, sizeof(struct elf_loadinfo_s)); - /* Open the binary file */ + /* Get the length of the file. */ + + ret = elf_filelen(loadinfo, filename); + { + bdbg("elf_filelen failed: %d\n", ret); + return ret; + } + + /* Open the binary file for reading (only) */ loadinfo->filfd = open(filename, O_RDONLY); if (loadinfo->filfd < 0) |