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author | midipix <writeonce@midipix.org> | 2015-11-21 21:17:19 -0500 |
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committer | midipix <writeonce@midipix.org> | 2016-11-10 23:35:25 -0500 |
commit | bbf9e9debd761b5c5024d8417ad38e1cadc70d5b (patch) | |
tree | 7a5b208769256db03f1888a6f9be02dd85108d78 /src/logic/pe_map_raw_image.c | |
parent | 1b12c372a5e411176d2c6e8ece9019de63f6bb5e (diff) | |
download | perk-bbf9e9debd761b5c5024d8417ad38e1cadc70d5b.tar.bz2 perk-bbf9e9debd761b5c5024d8417ad38e1cadc70d5b.tar.xz |
driver integration 1/9: remove old (ad-hoc) driver, prepare source tree.
Diffstat (limited to 'src/logic/pe_map_raw_image.c')
-rw-r--r-- | src/logic/pe_map_raw_image.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/logic/pe_map_raw_image.c b/src/logic/pe_map_raw_image.c new file mode 100644 index 0000000..caf14b9 --- /dev/null +++ b/src/logic/pe_map_raw_image.c @@ -0,0 +1,40 @@ +#include <stdint.h> +#include <unistd.h> +#include <fcntl.h> +#include <limits.h> +#include <errno.h> +#include <sys/mman.h> +#include <sys/types.h> +#include <sys/stat.h> + +#include <perk/perk.h> + +int pe_map_raw_image (int fd, const char * fname, int prot, struct pe_raw_image * map) +{ + struct stat stat; + int nfd, ret; + + if ((nfd = !fd)) + fd = open(fname,O_RDONLY | O_CLOEXEC); + + if ((fd < 0) || (fstat(fd,&stat) < 0)) + return errno; + + map->size = stat.st_size; + map->addr = mmap(0,map->size,prot,MAP_PRIVATE,fd,0); + + if (map->addr == MAP_FAILED) { + map->addr = 0; + ret = PERK_MAP_ERROR; + } else + ret = 0; + + if (nfd) close(fd); + + return ret; +} + +int pe_unmap_raw_image (struct pe_raw_image * map) +{ + return munmap(map->addr, map->size); +} |