aaade69ce
Aaro Koskinen
2021-12-17
Subject
find: implement -samefile
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findutils/find.c+35 -0
| @@ -155,6 +155,13 @@ | |
| //config: default y | |
| //config: depends on FIND | |
| //config: | |
| + | //config:config FEATURE_FIND_SAMEFILE |
| + | //config: bool "Enable -samefile: reference file matching" |
| + | //config: default y |
| + | //config: depends on FIND |
| + | //config: help |
| + | //config: Support the 'find -samefile' option for searching by a reference file. |
| + | //config: |
| //config:config FEATURE_FIND_EXEC | |
| //config: bool "Enable -exec: execute commands" | |
| //config: default y | |
| @@ -350,6 +357,9 @@ | |
| //usage: IF_FEATURE_FIND_INUM( | |
| //usage: "\n -inum N File has inode number N" | |
| //usage: ) | |
| + | //usage: IF_FEATURE_FIND_SAMEFILE( |
| + | //usage: "\n -samefile FILE File is same as FILE" |
| + | //usage: ) |
| //usage: IF_FEATURE_FIND_USER( | |
| //usage: "\n -user NAME/ID File is owned by given user" | |
| //usage: ) | |
| @@ -444,6 +454,7 @@ IF_FEATURE_FIND_MTIME( ACTS(mtime, unsigned char time_type; unsigned char mtime | |
| IF_FEATURE_FIND_MMIN( ACTS(mmin, unsigned char time_type; unsigned char mmin_char; unsigned mmin_mins;)) | |
| IF_FEATURE_FIND_NEWER( ACTS(newer, time_t newer_mtime;)) | |
| IF_FEATURE_FIND_INUM( ACTS(inum, ino_t inode_num;)) | |
| + | IF_FEATURE_FIND_SAMEFILE(ACTS(samefile, ino_t inode_num; dev_t device;)) |
| IF_FEATURE_FIND_USER( ACTS(user, uid_t uid;)) | |
| IF_FEATURE_FIND_SIZE( ACTS(size, char size_char; off_t size;)) | |
| IF_FEATURE_FIND_CONTEXT(ACTS(context, security_context_t context;)) | |
| @@ -731,6 +742,13 @@ ACTF(inum) | |
| return (statbuf->st_ino == ap->inode_num); | |
| } | |
| #endif | |
| + | #if ENABLE_FEATURE_FIND_SAMEFILE |
| + | ACTF(samefile) |
| + | { |
| + | return statbuf->st_ino == ap->inode_num && |
| + | statbuf->st_dev == ap->device; |
| + | } |
| + | #endif |
| #if ENABLE_FEATURE_FIND_EXEC | |
| static int do_exec(action_exec *ap, const char *fileName) | |
| { | |
| @@ -1125,6 +1143,7 @@ static action*** parse_params(char **argv) | |
| IF_FEATURE_FIND_CMIN( PARM_cmin ,) | |
| IF_FEATURE_FIND_NEWER( PARM_newer ,) | |
| IF_FEATURE_FIND_INUM( PARM_inum ,) | |
| + | IF_FEATURE_FIND_SAMEFILE(PARM_samefile ,) |
| IF_FEATURE_FIND_USER( PARM_user ,) | |
| IF_FEATURE_FIND_GROUP( PARM_group ,) | |
| IF_FEATURE_FIND_SIZE( PARM_size ,) | |
| @@ -1173,6 +1192,7 @@ static action*** parse_params(char **argv) | |
| IF_FEATURE_FIND_CMIN( "-cmin\0" ) | |
| IF_FEATURE_FIND_NEWER( "-newer\0" ) | |
| IF_FEATURE_FIND_INUM( "-inum\0" ) | |
| + | IF_FEATURE_FIND_SAMEFILE("-samefile\0") |
| IF_FEATURE_FIND_USER( "-user\0" ) | |
| IF_FEATURE_FIND_GROUP( "-group\0" ) | |
| IF_FEATURE_FIND_SIZE( "-size\0" ) | |
| @@ -1511,6 +1531,21 @@ static action*** parse_params(char **argv) | |
| ap->inode_num = xatoul(arg1); | |
| } | |
| #endif | |
| + | #if ENABLE_FEATURE_FIND_SAMEFILE |
| + | else if (parm == PARM_samefile) { |
| + | action_samefile *ap; |
| + | struct stat stbuf; |
| + | dbg("%d", __LINE__); |
| + | if (G.recurse_flags & (ACTION_FOLLOWLINKS | |
| + | ACTION_FOLLOWLINKS_L0)) |
| + | xstat(arg1, &stbuf); |
| + | else if (lstat(arg1, &stbuf)) |
| + | bb_perror_msg_and_die("can't stat '%s'", arg1); |
| + | ap = ALLOC_ACTION(samefile); |
| + | ap->inode_num = stbuf.st_ino; |
| + | ap->device = stbuf.st_dev; |
| + | } |
| + | #endif |
| #if ENABLE_FEATURE_FIND_USER | |
| else if (parm == PARM_user) { | |
| action_user *ap; | |