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author | midipix <writeonce@midipix.org> | 2016-03-04 13:32:05 -0500 |
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committer | midipix <writeonce@midipix.org> | 2016-03-08 14:21:05 -0500 |
commit | 9ca8c4c3c1b2cb1b22a3ff04c1c37b0863dd87f6 (patch) | |
tree | d1659a6814efef596730d6da5247b3fdd58d179b /src/logic | |
parent | 0ff546cab29192407bf991bf915dce52c049c387 (diff) | |
download | slibtool-9ca8c4c3c1b2cb1b22a3ff04c1c37b0863dd87f6.tar.bz2 slibtool-9ca8c4c3c1b2cb1b22a3ff04c1c37b0863dd87f6.tar.xz |
created skeleton.
Diffstat (limited to 'src/logic')
-rw-r--r-- | src/logic/slbt_map_input.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/logic/slbt_map_input.c b/src/logic/slbt_map_input.c new file mode 100644 index 0000000..2da2429 --- /dev/null +++ b/src/logic/slbt_map_input.c @@ -0,0 +1,51 @@ +/*******************************************************************/ +/* slibtool: a skinny libtool implementation, written in C */ +/* Copyright (C) 2016 Z. Gilboa */ +/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */ +/*******************************************************************/ + +#include <stdint.h> +#include <stdbool.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/mman.h> +#include <sys/types.h> +#include <sys/stat.h> + +#include <slibtool/slibtool.h> + +int slbt_map_input( + int fd, + const char * path, + int prot, + struct slbt_input * map) +{ + struct stat st; + bool fnew; + int ret; + + if ((fnew = (fd < 0))) + fd = open(path,O_RDONLY | O_CLOEXEC); + + if (fd < 0) + return -1; + + if ((ret = fstat(fd,&st) < 0) && fnew) + close(fd); + + if (ret < 0) + return -1; + + map->size = st.st_size; + map->addr = mmap(0,map->size,prot,MAP_PRIVATE,fd,0); + + if (fnew) + close(fd); + + return (map->addr == MAP_FAILED) ? -1 : 0; +} + +int slbt_unmap_input(struct slbt_input * map) +{ + return munmap(map->addr,map->size); +} |