diff options
-rw-r--r-- | toys/chgrp.c | 106 | ||||
-rw-r--r-- | toys/chmod.c | 92 | ||||
-rw-r--r-- | toys/chown.c | 137 |
3 files changed, 335 insertions, 0 deletions
diff --git a/toys/chgrp.c b/toys/chgrp.c new file mode 100644 index 00000000..54b2488c --- /dev/null +++ b/toys/chgrp.c @@ -0,0 +1,106 @@ +/* vi: set sw=4 ts=4: + * + * chgrp.c - Change group ownership + * + * Copyright 2012 Georgi Chorbadzhiyski <georgi@unixsol.org> + * + * See http://pubs.opengroup.org/onlinepubs/009695399/utilities/chgrp.html + * + * TODO: Add support for -h + * TODO: Add support for -H + * TODO: Add support for -L + * TODO: Add support for -P + +USE_CHGRP(NEWTOY(chgrp, "<2Rfv", TOYFLAG_BIN)) + +config CHGRP + bool "chgrp" + default y + help + usage: chgrp [-R] [-f] [-v] group file... + Change group ownership of one or more files. + + -R recurse into subdirectories. + -f suppress most error messages. + -v verbose output. +*/ + +#include "toys.h" + +#define FLAG_R 4 +#define FLAG_f 2 +#define FLAG_v 1 + +DEFINE_GLOBALS( + gid_t group; + char *group_name; +) + +#define TT this.chgrp + +static int do_chgrp(const char *path) { + int ret = chown(path, -1, TT.group); + if (toys.optflags & FLAG_v) + xprintf("chgrp(%s, %s)\n", TT.group_name, path); + if (ret == -1 && !(toys.optflags & FLAG_f)) + perror_msg("changing group of '%s' to '%s'", path, TT.group_name); + toys.exitval |= ret; + return ret; +} + +// Copied from toys/cp.c:cp_node() +int chgrp_node(char *path, struct dirtree *node) +{ + char *s = path + strlen(path); + struct dirtree *n = node; + + for ( ; ; n = n->parent) { + while (s!=path) { + if (*(--s) == '/') break; + } + if (!n) break; + } + if (s != path) s++; + + do_chgrp(s); + + return 0; +} + +void chgrp_main(void) +{ + char **s; + struct group *group; + + TT.group_name = *toys.optargs; + group = getgrnam(TT.group_name); + if (!group) { + error_msg("invalid group '%s'", TT.group_name); + toys.exitval = 1; + return; + } + TT.group = group->gr_gid; + + if (toys.optflags & FLAG_R) { + // Recurse into subdirectories + for (s=toys.optargs + 1; *s; s++) { + struct stat sb; + if (stat(*s, &sb) == -1) { + if (!(toys.optflags & FLAG_f)) + perror_msg("stat '%s'", *s); + continue; + } + do_chgrp(*s); + if (S_ISDIR(sb.st_mode)) { + strncpy(toybuf, *s, sizeof(toybuf) - 1); + toybuf[sizeof(toybuf) - 1] = 0; + dirtree_read(toybuf, NULL, chgrp_node); + } + } + } else { + // Do not recurse + for (s=toys.optargs + 1; *s; s++) { + do_chgrp(*s); + } + } +} diff --git a/toys/chmod.c b/toys/chmod.c new file mode 100644 index 00000000..71f3202f --- /dev/null +++ b/toys/chmod.c @@ -0,0 +1,92 @@ +/* vi: set sw=4 ts=4: + * + * chmod.c - Change file mode bits + * + * Copyright 2012 Georgi Chorbadzhiyski <georgi@unixsol.org> + * + * See http://pubs.opengroup.org/onlinepubs/009695399/utilities/chmod.html + * + +USE_CHMOD(NEWTOY(chmod, "<2Rfv", TOYFLAG_BIN)) + +config CHMOD + bool "chmod" + default y + help + usage: chmod [-R] [-f] [-v] mode file... + Change mode bits of one or more files. + + -R recurse into subdirectories. + -f suppress most error messages. + -v verbose output. +*/ + +#include "toys.h" + +#define FLAG_R 4 +#define FLAG_f 2 +#define FLAG_v 1 + +DEFINE_GLOBALS( + long mode; +) + +#define TT this.chmod + +static int do_chmod(const char *path) { + int ret = chmod(path, TT.mode); + if (toys.optflags & FLAG_v) + xprintf("chmod(%04o, %s)\n", TT.mode, path); + if (ret == -1 && !(toys.optflags & FLAG_f)) + perror_msg("changing perms of '%s' to %04o", path, TT.mode); + toys.exitval |= ret; + return ret; +} + +// Copied from toys/cp.c:cp_node() +int chmod_node(char *path, struct dirtree *node) +{ + char *s = path + strlen(path); + struct dirtree *n = node; + + for ( ; ; n = n->parent) { + while (s!=path) { + if (*(--s) == '/') break; + } + if (!n) break; + } + if (s != path) s++; + + do_chmod(s); + + return 0; +} + +void chmod_main(void) +{ + char **s; + TT.mode = strtoul(*toys.optargs, NULL, 8); + + if (toys.optflags & FLAG_R) { + // Recurse into subdirectories + for (s=toys.optargs + 1; *s; s++) { + struct stat sb; + if (stat(*s, &sb) == -1) { + if (!(toys.optflags & FLAG_f)) + perror_msg("%s", *s); + continue; + } + do_chmod(*s); + if (S_ISDIR(sb.st_mode)) { + strncpy(toybuf, *s, sizeof(toybuf) - 1); + toybuf[sizeof(toybuf) - 1] = 0; + dirtree_read(toybuf, NULL, chmod_node); + } + } + } else { + // Do not recurse + for (s=toys.optargs + 1; *s; s++) { + do_chmod(*s); + } + } +} diff --git a/toys/chown.c b/toys/chown.c new file mode 100644 index 00000000..217e393f --- /dev/null +++ b/toys/chown.c @@ -0,0 +1,137 @@ +/* vi: set sw=4 ts=4: + * + * chown.c - Change ownership + * + * Copyright 2012 Georgi Chorbadzhiyski <georgi@unixsol.org> + * + * See http://pubs.opengroup.org/onlinepubs/009695399/utilities/chown.html + * + * TODO: Add support for -h + * TODO: Add support for -H + * TODO: Add support for -L + * TODO: Add support for -P + +USE_CHOWN(NEWTOY(chown, "<2Rfv", TOYFLAG_BIN)) + +config CHOWN + bool "chown" + default y + help + usage: chown [-R] [-f] [-v] group file... + Change ownership of one or more files. + + -R recurse into subdirectories. + -f suppress most error messages. + -v verbose output. +*/ + +#include "toys.h" + +#define FLAG_R 4 +#define FLAG_f 2 +#define FLAG_v 1 + +DEFINE_GLOBALS( + uid_t owner; + gid_t group; + char *owner_name; + char *group_name; +) + +#define TT this.chown + +static int do_chown(const char *path) { + int ret = chown(path, TT.owner, TT.group); + if (toys.optflags & FLAG_v) + xprintf("chown(%s:%s, %s)\n", TT.owner_name, TT.group_name, path); + if (ret == -1 && !(toys.optflags & FLAG_f)) + perror_msg("changing owner of '%s' to '%s:%s'", path, + TT.owner_name, TT.group_name); + toys.exitval |= ret; + return ret; +} + +// Copied from toys/cp.c:cp_node() +int chown_node(char *path, struct dirtree *node) +{ + char *s = path + strlen(path); + struct dirtree *n = node; + + for ( ; ; n = n->parent) { + while (s!=path) { + if (*(--s) == '/') break; + } + if (!n) break; + } + if (s != path) s++; + + do_chown(s); + + return 0; +} + +void chown_main(void) +{ + char **s; + char *owner = NULL, *group; + char *param1 = *toys.optargs; + + TT.owner = -1; + TT.group = -1; + TT.owner_name = ""; + TT.group_name = ""; + + group = strchr(param1, ':'); + if (!group) + group = strchr(param1, '.'); + + if (group) { + group++; + struct group *g = getgrnam(group); + if (!g) { + error_msg("invalid group '%s'", group); + toys.exitval = 1; + return; + } + TT.group = g->gr_gid; + TT.group_name = group; + owner = param1; + owner[group - owner - 1] = '\0'; + } else { + owner = param1; + } + + if (owner && owner[0]) { + struct passwd *p = getpwnam(owner); + if (!p) { + error_msg("invalid owner '%s'", owner); + toys.exitval = 1; + return; + } + TT.owner = p->pw_uid; + TT.owner_name = owner; + } + + if (toys.optflags & FLAG_R) { + // Recurse into subdirectories + for (s=toys.optargs + 1; *s; s++) { + struct stat sb; + if (stat(*s, &sb) == -1) { + if (!(toys.optflags & FLAG_f)) + perror_msg("%s", *s); + continue; + } + do_chown(*s); + if (S_ISDIR(sb.st_mode)) { + strncpy(toybuf, *s, sizeof(toybuf) - 1); + toybuf[sizeof(toybuf) - 1] = 0; + dirtree_read(toybuf, NULL, chown_node); + } + } + } else { + // Do not recurse + for (s=toys.optargs + 1; *s; s++) { + do_chown(*s); + } + } +} |