The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
generic_permission – check for access rights on a Posix-like filesystem Synopsis int generic_permission(struct inode *inode, int mask); Arguments inode inode to check access rights for mask right to check for (MAY_READ, MAY_WRITE, MAY_EXEC, …) Description Used to check for read/write/execute permissions on a file. We use “fsuid” for this, letting us set arbitrary permissions for…
generic_make_request – hand a buffer to its device driver for I/O Synopsis blk_qc_t generic_make_request(struct bio * bio); Arguments bio The bio describing the location in memory and on the device. Description generic_make_request is used to make I/O requests of block devices. It is passed a struct bio, which describes the I/O that needs to be done. generic_make_request…
generic_file_write_iter – write data to a file Synopsis ssize_t generic_file_write_iter(struct kiocb * iocb, struct iov_iter * from); Arguments iocb IO state structure from iov_iter with data to write Description This is a wrapper around __generic_file_write_iter to be used by most filesystems. It takes care of syncing the file in case of O_SYNC file and acquires i_mutex as needed. Copyright
generic_file_splice_read – splice data from file to a pipe Synopsis ssize_t generic_file_splice_read(struct file * in, loff_t * ppos, struct pipe_inode_info * pipe, size_t len, unsigned int flags); Arguments in file to splice from ppos position in in pipe pipe to splice to len number of bytes to splice flags splice modifier flags Description Will read pages from given file and fill them into…
generic_file_read_iter – generic filesystem read routine Synopsis ssize_t generic_file_read_iter(struct kiocb * iocb, struct iov_iter * iter); Arguments iocb kernel I/O control block iter destination for the data read Description This is the “read_iter” routine for all filesystems that can use the page cache directly. Copyright
gen_replace_estimator – replace rate estimator configuration Synopsis int gen_replace_estimator(struct gnet_stats_basic_packed *bstats, struct gnet_stats_basic_cpu __percpu *cpu_bstats, struct gnet_stats_rate_est64 *rate_est, spinlock_t *stats_lock, seqcount_t *running, struct nlattr *opt); Arguments bstats basic statistics cpu_bstats bstats per cpu rate_est rate estimator statistics stats_lock statistics lock running qdisc running seqcount (might be NULL) opt rate estimator configuration TLV Description Replaces the…
gen_new_estimator – create a new rate estimator Synopsis int gen_new_estimator(struct gnet_stats_basic_packed *bstats, struct gnet_stats_basic_cpu __percpu *cpu_bstats, struct gnet_stats_rate_est64 *rate_est, spinlock_t *stats_lock, seqcount_t *running, struct nlattr *opt); Arguments bstats basic statistics cpu_bstats bstats per cpu rate_est rate estimator statistics stats_lock statistics lock running qdisc running seqcount opt rate estimator configuration TLV Description Creates a new rate…
gen_kill_estimator – remove a rate estimator Synopsis void gen_kill_estimator(struct gnet_stats_basic_packed *bstats, struct gnet_stats_rate_est64 *rate_est); Arguments bstats basic statistics rate_est rate estimator statistics Description Removes the rate estimator specified by bstats and rate_est. Note Caller should respect an RCU grace period before freeing stats_lock Copyright
gen_estimator_active – test if estimator is currently in use Synopsis bool gen_estimator_active(const struct gnet_stats_basic_packed * bstats, const struct gnet_stats_rate_est64 * rate_est); Arguments bstats basic statistics rate_est rate estimator statistics Description Returns true if estimator is active, and false if not. Copyright
gdb_regs_to_pt_regs – Convert GDB regs to ptrace regs. Synopsis void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs); Arguments gdb_regs A pointer to hold the registers we’ve received from GDB. regs A pointer to a struct pt_regs to hold these values in. Description Convert the GDB regs in gdb_regs into the pt_regs, and store them in regs….
gadget_is_zlp_supported – return true iff the hardware supports zlp Synopsis int gadget_is_zlp_supported(struct usb_gadget *g); Arguments g controller to check for quirk Author David Brownell <dbrownell [at] users.sourceforge.net> Author. Copyright
gadget_is_superspeed_plus – return true if the hardware handles superspeed plus Synopsis int gadget_is_superspeed_plus(struct usb_gadget *g); Arguments g controller that might support superspeed plus Author David Brownell <dbrownell [at] users.sourceforge.net> Author. Copyright
gadget_is_superspeed – return true if the hardware handles superspeed Synopsis int gadget_is_superspeed(struct usb_gadget *g); Arguments g controller that might support superspeed Author David Brownell <dbrownell [at] users.sourceforge.net> Author. Copyright
gadget_is_stall_supported – return true iff the hardware supports stalling Synopsis int gadget_is_stall_supported(struct usb_gadget *g); Arguments g controller to check for quirk Author David Brownell <dbrownell [at] users.sourceforge.net> Author. Copyright
gadget_is_otg – return true iff the hardware is OTG-ready Synopsis int gadget_is_otg(struct usb_gadget *g); Arguments g controller that might have a Mini-AB connector Description This is a runtime test, since kernels with a USB-OTG stack sometimes run on boards which only have a Mini-B (or Mini-A) connector. Author David Brownell <dbrownell [at] users.sourceforge.net> Author. Copyright
gadget_is_dualspeed – return true iff the hardware handles high speed Synopsis int gadget_is_dualspeed(struct usb_gadget *g); Arguments g controller that might support both high and full speeds Author David Brownell <dbrownell [at] users.sourceforge.net> Author. Copyright
gadget_is_altset_supported – return true iff the hardware supports altsettings Synopsis int gadget_is_altset_supported(struct usb_gadget *g); Arguments g controller to check for quirk Author David Brownell <dbrownell [at] users.sourceforge.net> Author. Copyright
gadget_avoids_skb_reserve – return true iff the hardware would like to avoid skb_reserve to improve performance. Synopsis int gadget_avoids_skb_reserve(struct usb_gadget *g); Arguments g controller to check for quirk Author David Brownell <dbrownell [at] users.sourceforge.net> Author. Copyright
futex_wait_setup – Prepare to wait on a futex Synopsis int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags, struct futex_q *q, struct futex_hash_bucket **hb); Arguments uaddr the futex userspace address val the expected value flags futex flags (FLAGS_SHARED, etc.) q the associated futex_q hb storage for hash_bucket pointer to be returned to caller Description Setup…
futex_wait_requeue_pi – Wait on uaddr and take uaddr2 Synopsis int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags, u32 val, ktime_t *abs_time, u32 bitset, u32 __user *uaddr2); Arguments uaddr the futex we initially wait on (non-pi) flags futex flags (FLAGS_SHARED, FLAGS_CLOCKRT, etc.), they must be the same type, no requeueing from private to shared, etc. val the…